On August 12, 2025 Aprea Therapeutics, Inc. (Nasdaq: APRE) ("Aprea", or the "Company"), a clinical-stage biopharmaceutical company developing innovative treatments that exploit specific cancer cell vulnerabilities while minimizing damage to healthy cells, reported financial results for the second quarter ended June 30, 2025, and provided a business update (Press release, Aprea, AUG 12, 2025, View Source [SID1234655126]).

Schedule your 30 min Free 1stOncology Demo!
Discover why more than 1,500 members use 1stOncology™ to excel in:

Early/Late Stage Pipeline Development - Target Scouting - Clinical Biomarkers - Indication Selection & Expansion - BD&L Contacts - Conference Reports - Combinatorial Drug Settings - Companion Diagnostics - Drug Repositioning - First-in-class Analysis - Competitive Analysis - Deals & Licensing

                  Schedule Your 30 min Free Demo!

"We are pleased with our progress in 2025, as emerging data from both of our lead programs demonstrate evidence of clinical activity," said Oren Gilad, Ph.D., President and Chief Executive Officer of Aprea. "In the ACESOT-1051 trial of our oral WEE1 inhibitor APR-1051, we have observed three patients with stable disease to date, one in the 70mg cohort and two in the 100mg cohort, including an early clinical signal in an HPV-positive head and neck squamous cell carcinoma, and in rectal and uterine cancer patients. For our macrocyclic ATR inhibitor, ATRN-119, the ongoing dose escalation study has shown early activity, with seven patients achieving stable disease to date, including three with meaningful tumor shrinkage at the 550 mg twice daily dose. Overall, these early signs of clinical validation continue to strengthen our confidence in the potential of our DDR assets and to deliver meaningful therapeutic advances for patients with cancer."

Key Business Updates and Potential Upcoming Key Milestones

ACESOT-1051: A Biomarker Focused, Phase 1 Trial of Oral WEE1 inhibitor, APR-1051

APR-1051 is a potent and selective small molecule WEE1 inhibitor designed to potentially solve tolerability challenges of the WEE1 class and may achieve greater clinical activity than other programs currently in development. Aprea is advancing APR-1051 as monotherapy in cancers with well-defined biomarkers that may predict sensitivity to WEE1 inhibition. Among these, cancers over-expressing Cyclin E represent a high unmet medical need. Patients with Cyclin E over-expression have poor prognosis and, currently, lack effective therapies options.
Patients are currently being enrolled at the 100 mg once-daily dose level in the ongoing Phase 1 ACESOT-1051 (A Multi-Center Evaluation of WEE1 Inhibitor in Patients with Advanced Solid Tumors, APR-1051). Based on data to date, APR-1051 has demonstrated an encouraging tolerability profile. Following successful clearance of the 100 mg cohort, dose escalation is expected to continue with enrollment at 150 mg level. Earlier in 2025, the dosing schedule was revised based on pharmacokinetic data to potentially further support a higher therapeutic window.
Enrollment criteria in the ACESOT-1051 trial have been expanded to include patients with HPV+ tumors. Evidence of early disease control has been observed in a patient diagnosed with HPV+ head and neck squamous cell carcinoma (HNSCC) treated with a subtherapeutic 70 mg once daily oral dose of APR-1051. At the first radiographic assessment, this patient was noted to have stable disease with a 5% tumor reduction.
Additional safety and efficacy data from the ACESOT-1051 study are anticipated in the second half of 2025, with completion of the dose-escalation phase expected in the first half of 2026. Aprea intends to submit an abstract to a major oncology conference.
Pending additional data, future arms of ACESOT-1051 may evaluate APR-1051 in combination with checkpoint inhibitors to address unmet medical needs across distinct patient populations.
For more information, refer to ClinicalTrials.gov NCT06260514.
Collaboration with MD Anderson Cancer Center

Aprea entered into a translational research collaboration with MD Anderson Cancer Center earlier in 2025. New preclinical results on APR-1051 showed: 1) potent single-agent activity for APR-1051 across a broad panel of human and murine head and neck cancer cell lines, including HPV+ subtypes, and 2) significant anti-tumor synergy with APR-1051 plus anti–PD-1 therapies in HPV+ HNSCC models, positioning APR-1051 as a candidate for combination-based clinical trials.
ABOYA-119: Ongoing Clinical Trial Evaluating ATR inhibitor, ATRN-119

ATRN-119 is a potent and highly selective first-in-class macrocyclic ATR inhibitor, designed and developed to be used in patients with mutations in DDR-related genes. Cancers with mutations in DDR-related genes represent a high unmet medical need. These patients often have a poor prognosis and currently lack effective therapeutics options.
ATRN-119 is being evaluated in the open-label Phase 1/2a clinical trial (ABOYA-119) as monotherapy in patients with advanced solid tumors having at least one mutation in a defined panel of DDR-related genes. Seven patients have demonstrated stable disease to date, with three patients in the 550 mg twice daily cohort showing tumor shrinkage of 7%, 14% and 21%. Dose limiting toxicity was observed in two patients at 550 mg twice daily. Patients are now being dosed at a 400 mg twice daily schedule to further refine and optimize therapeutic efficacy and tolerability.
Additional safety and efficacy data from ABOYA-119 are expected in the second half of 2025 and the recommended Phase 2 dose is expected to be identified in the first half of 2026.
Pending additional data, future arms of ABOYA-119 may evaluate ATRN-119 in combination with other therapies to address unmet medical needs for a distinct patient population.
For more information on ABOYA-119, please refer to clinicaltrials.gov NCT04905914.
Select Financial Results for the Second quarter Ended June 30, 2025

As of June 30, 2025, the Company reported cash and cash equivalents of $16.5 million compared to $22.8 million as of December 31, 2024. The Company believes its cash and cash equivalents as of June 30, 2025, will be sufficient to meet its currently projected operating expenses and capital expenditure requirements into Q2 2026.
For the second quarter ended June 30, 2025, the Company reported an operating loss of $3.4 million, compared to an operating loss of $3.8 million in the second quarter of 2024.
Research and Development (R&D) expenses were $1.9 million for the quarter ended June 30, 2025, compared to $2.6 million for the second quarter of 2024. The decrease in R&D expense was primarily related to higher expenses in 2024 related to study start up activities in preparation for enrollment of the first patient into ACESOT-105, our Phase 1 dose-escalation study of APR-1051, and a decrease in personnel costs.
General and Administrative (G&A) expenses were $1.6 million for the quarter ended June 30, 2025, compared to $1.9 million for the second quarter of 2024. The decrease in G&A expense was primarily related to a decrease in professional fees primarily related to legal expenses and a decrease in personnel costs.
The Company reported a net loss of $3.2 million ($0.53 per basic share) on approximately 6.1 million weighted average common shares outstanding for the quarter ended June 30, 2025, compared to a net loss of $3.5 million ($0.58 per basic share) on approximately 5.9 million weighted average common shares outstanding for the comparable period in 2024.

On August 12, 2025 Atossa Therapeutics, Inc. (Nasdaq: ATOS) (Atossa or the Company), a clinical-stage biopharmaceutical company developing innovative medicines for breast cancer, reported its financial results for the second quarter ended June 30, 2025 and provided an update on recent company developments (Press release, Atossa Therapeutics, AUG 12, 2025, View Source [SID1234655150]).

Schedule your 30 min Free 1stOncology Demo!
Discover why more than 1,500 members use 1stOncology™ to excel in:

Early/Late Stage Pipeline Development - Target Scouting - Clinical Biomarkers - Indication Selection & Expansion - BD&L Contacts - Conference Reports - Combinatorial Drug Settings - Companion Diagnostics - Drug Repositioning - First-in-class Analysis - Competitive Analysis - Deals & Licensing

                  Schedule Your 30 min Free Demo!

"Atossa continues to make meaningful and measurable progress across our pipeline, underscored by recent, highly constructive interactions with the FDA that further support our (Z)-endoxifen development strategy in metastatic breast cancer," stated Dr. Steven Quay, Chairman and CEO of Atossa Therapeutics. "With a strong balance sheet, we believe we are well-positioned to execute on our planned upcoming IND submission and advance our metastatic clinical program toward key value-creating milestones. We remain disciplined in our capital strategy and have deliberately chosen not to utilize our ATM facility at recent share price levels, which we believe significantly undervalue the true potential of our Company. As we progress toward multiple upcoming potential catalysts, we are confident that our focused execution, scientific rigor, and unwavering commitment to patients will demonstrate the substantial intrinsic value of Atossa and position (Z)-endoxifen to make a meaningful impact in the treatment of breast cancer."

Clinical & Regulatory Developments

Positive FDA Feedback on (Z)-Endoxifen Program – In July 2025, Atossa announced it received highly constructive written feedback from the U.S. Food and Drug Administration (FDA), supporting the Company’s proposed dose optimization trial in estrogen receptor positive, human epidermal growth factor receptor 2 negative (ER+/HER2-) metastatic breast cancer and allowing the Company to meet the requirements of Project Optimus. The FDA agreed that existing clinical and nonclinical data are sufficient to initiate the monotherapy arm (Part A) of the study and agreed with the scientific rationale for combination therapy arms (Part B) using standard-of-care agents, such as CDK4/6 inhibitors, PI3K inhibitors, mTOR inhibitors, and capecitabine. The Agency also indicated that no additional general toxicity or neurotoxicity studies are required and confirmed that Atossa’s cardiac safety assessment monitoring protocol is sufficient for the monotherapy portion of the trial. These developments support the Company’s plan to file an Investigational New Drug (IND) application with the FDA, which is expected in Q4 2025.
Clinical Trial Readouts & Scientific Validation

I‑SPY 2 Endocrine Optimization Sub‑Study Results (Monotherapy with Low-Dose 10 mg (Z)-endoxifen) – In May 2025, Atossa released full results from the Phase 2 pilot within the I‑SPY 2 trial. Among 20 women with stage II/III ER+, HER2‑ breast cancer.
Primary endpoint achieved with 95 percent of subjects completing at least 75 percent of planned dosing.
Median Ki‑67 dropped from 10.5 percent at baseline to 5 percent by Week 3, with 65 percent achieving Ki‑67 ≤ 10 percent. Ki-67 is a widely used biomarker in pathology to assess the extent to which cancer cells are dividing and is often correlated with tumor behavior and prognosis. The POETIC (Peri-Operative Endocrine Therapy for individualized Care) trial, a large phase 3 study conducted in the UK and sponsored by the Institute of Cancer Research and the Royal Marsden NHS Foundation Trust, demonstrated that early changes in Ki-67 are strongly prognostic. Published in 2020, the trial showed that women with ER+/HER2− breast cancer whose Ki-67 levels fell from >10 percent at baseline to ≤10 percent after just two weeks of neoadjuvant aromatase inhibitor therapy had a 5-year recurrence rate of 8.4 percent, compared to 21.5 percent in those whose Ki-67 remained above 10 percent.
Median functional tumor volume, as assessed by MRI, decreased by 77.7 percent from baseline to surgery, and the longest tumor diameter dropped by 36.8 percent from baseline to preoperative MRI.
Safety was favorable: adverse events were predominantly Grade 1; vasomotor symptoms (hot flushes) and fatigue were most common. Only three Grade 3 events (two skin infections, one post‑procedural infection) occurred in a single patient and were deemed unrelated to the study drug; no Grade 4 or Grade 5 events were reported.
I-SPY 2 – Endocrine Optimization Pilot Analysis (Combination therapy of 40 mg (Z)-endoxifen and Eli Lilly’s abemaciclib)
Patient recruitment continues at a faster rate than anticipated, with 41 patients initiated as of July 29, 2025.
Other ongoing Phase 2 Programs – Atossa continues to evaluate (Z)-endoxifen in two other Phase 2 trials: one in women with ductal carcinoma in situ (DCIS) and one in women with ER+/HER2- breast cancer, as previously disclosed.
Intellectual Property & Patent Portfolio

New U.S. Patents – In mid‑May 2025, Atossa announced the issuance of U.S. Patent No. 12,281,056, containing 58 claims relating to the enteric oral formulations of (Z)-endoxifen, including features of improved purity, stability, and bioavailability.
Recent Patent Challenges – Two of Atossa’s patents are currently the subject of post‑grant challenges (i.e., U.S. Patent Nos. 11,261,151 and 12,071,391), which may result in modification or invalidation of certain patent claims; however, such proceedings are common for high‑value pharmaceutical IP, and we remain confident in our ability to vigorously defend these patents. The majority of Atossa’s intellectual property is unaffected. Atossa holds four additional issued U.S. patents with claims to endoxifen—U.S. Patent Nos. 11,680,036, 12,201,591, 12,275,684, and 12,281,056—with over 200 total claims covering proprietary manufacturing methods, stable crystalline forms, and multiple sustained‑release and enteric oral formulations of (Z)‑endoxifen. We believe that these patents, along with pending applications worldwide, provide substantial additional protection for our lead program.
Strategic Outlook & Upcoming Milestones

Atossa remains focused on executing its breast cancer development strategy. Key upcoming deliverables include:

Announcement of Contract Research Organization (CRO) selected to execute the metastatic dose ranging study in coordination with Atossa clinical personnel.
Disclosure of dose-ranging trial design, including specifics on patient selection criteria and combination treatment backbone.
Targeting IND submission in Q4 2025, in alignment with feedback under the FDA Project Optimus initiative.
Advancing enrollment and data generation from ongoing Phase 2 trials.
Working with the FDA on regulatory strategies for breast cancer indications beyond metastatic breast cancer, including treating women in the adjuvant setting, patients with DCIS, and in reducing the incidence of breast cancer in high-risk women.
Comparison of Three and Six Months Ended June 30, 2025 and 2024

Operating Expenses. Total operating expenses were $9.0 million and $16.5 million for the three and six months ended June 30, 2025, respectively, which was an increase of $1.9 million and $2.4 million from total operating expenses for the three and six months ended June 30, 2024 of $7.1 million and $14.1 million, respectively. Factors contributing to the increased operating expenses in the three and six months ended June 30, 2025 are explained below.

Research & Development (R&D) Expenses. The following table provides a breakdown of major categories within R&D expenses for the three and six months ended June 30, 2025 and 2024, together with the dollar change and percentage change in those categories (dollars in thousands):

For the Three Months Ended June 30,

For the Six Months Ended June 30,

2025

2024

Increase (Decrease)

% Increase (Decrease)

2025

2024

Increase (Decrease)

% Increase (Decrease)

Research and Development Expense

Clinical and non-clinical trials

$

4,089

$

2,501

$

1,588

63 %

$

6,836

$

5,384

$

1,452

27 %

Compensation

856

679

177

26 %

1,736

1,305

431

33 %

Professional fees and other

557

373

184

49 %

1,087

613

474

77 %

Research and Development Expense Total

$

5,502

$

3,553

$

1,949

55 %

$

9,659

$

7,302

$

2,357

32 %

Clinical and non-clinical trial expenses increased $1.6 million and $1.5 million for the three and six months ended June 30, 2025, respectively, compared to the three and six months ended June 30, 2024, due to increases in spend related to our (Z)-endoxifen trials, including drug development costs.
The increases in R&D compensation expenses of $0.2 million and $0.4 million for the three and six months ended June 30, 2025, respectively, compared to the three and six months ended June 30, 2024, were due to increases in headcount.
The increases in R&D professional fees and other of $0.2 million and $0.5 million for the three and six months ended June 30, 2025, respectively, compared to the three and six months ended June 30, 2024, were primarily attributable to higher consulting fees in the 2025 periods related to our (Z)-endoxifen program.
General and Administrative (G&A) Expenses. The following table provides a breakdown of major categories within G&A expenses for the three and six months ended June 30, 2025 and 2024, together with the dollar change and percentage change in those categories (dollars in thousands):

For the Three Months Ended June 30,

For the Six Months Ended June 30,

2025

2024

Increase (Decrease)

% Increase (Decrease)

2025

2024

Increase (Decrease)

% Increase (Decrease)

General and Administrative Expense

Compensation

$

1,564

$

1,031

$

533

52 %

$

3,026

$

2,356

$

670

28 %

Professional fees and other

1,794

2,269

(475)

(21) %

3,408

3,949

(541)

(14 %)

Insurance

180

252

(72)

(29) %

361

479

(118)

(25) %

General and Administrative Expense Total

$

3,538

$

3,552

$

(14)

(0) %

$

6,795

$

6,784

$

11

0 %

The increases in G&A compensation expenses of $0.5 million and $0.7 million for the three and six months ended June 30, 2025, respectively, compared to the three and six months ended June 30, 2024, were primarily due to increases in non-cash stock-based compensation expense of $0.4 million and $0.5 million, respectively.
The decreases in G&A professional fees and other of $0.5 million for the three and six months ended June 30, 2025, compared to the three and six months ended June 30, 2024, were due to decreases in legal fees of $0.3 million and $0.2 million, respectively, related to higher patent-related activity as well as other legal matters in the prior year periods and decreases in investor relations costs of $0.1 million and $0.3 million, respectively, due to changes in the timing of investor outreach programs.
Interest Income. Interest income was $0.6 million and $1.4 million for the three and six months ended June 30, 2025, respectively, a decrease of $0.5 million and $0.8 million from interest income of $1.1 million and $2.2 million for the three and six months ended June 30, 2024, respectively. The decreases were due to decreases in the average balance invested in our money market account.

About (Z)-Endoxifen
(Z)-endoxifen is a highly potent Selective Estrogen Receptor Modulator (SERM) with demonstrated ability to inhibit—and potentially degrade—estrogen receptors. It has shown activity even in tumors that have developed resistance to other endocrine therapies. Beyond its anti-estrogenic properties, (Z)-endoxifen also targets protein kinase C beta 1 (PKCβ1), an oncogenic signaling protein, at clinically achievable blood levels. Importantly, (Z)-endoxifen seems to deliver comparable or superior bone-protective effects relative to tamoxifen.

Atossa is developing a proprietary enteric oral formulation of (Z)-endoxifen that bypasses stomach acid, which would otherwise convert the active (Z)-isomer to its inactive (E)-form. We believe this innovation allows for optimal bioavailability and therapeutic integrity. Clinical studies have shown Atossa’s (Z)-endoxifen to be well tolerated in both healthy women and those with breast cancer. In over 700 subjects (healthy volunteers and breast cancer patients), doses up to 360 mg/day have been administered with no maximum tolerated dose (MTD) identified, supporting continued dose-ranging exploration.

Atossa is prioritizing the development of (Z)-endoxifen for the treatment of metastatic breast cancer, where novel therapeutic options are urgently needed. The compound is currently being evaluated in three Phase 2 trials: one in women with ductal carcinoma in situ (DCIS) and two in women with ER+/HER2- breast cancer. Atossa’s (Z)-endoxifen program is supported by a growing global intellectual property portfolio, including three recently issued U.S. patents and numerous pending applications worldwide.

On August 12, 2025 Artios Pharma Limited ("Artios"), a biopharmaceutical company committed to realizing the therapeutic power of targeting the DNA damage response ("DDR") in cancer, reported the appointment of Mike Andriole as Chief Executive Officer (CEO) and Director (Press release, Artios Pharma, AUG 12, 2025, View Source [SID1234655127]). He joins the company with a biopharmaceutical career that spans nearly 25 years, marked by a consistent theme of focused execution across clinical, corporate, and strategic development. His appointment supports the company’s transition into a late-stage clinical organization preparing for the potential commercialization of alnodesertib (formerly ART0380) in ATM-deficient solid tumors. Mike Andriole succeeds Niall Martin, Artios’ founding CEO, who will remain an advisor to the company through a transition period.

Schedule your 30 min Free 1stOncology Demo!
Discover why more than 1,500 members use 1stOncology™ to excel in:

Early/Late Stage Pipeline Development - Target Scouting - Clinical Biomarkers - Indication Selection & Expansion - BD&L Contacts - Conference Reports - Combinatorial Drug Settings - Companion Diagnostics - Drug Repositioning - First-in-class Analysis - Competitive Analysis - Deals & Licensing

                  Schedule Your 30 min Free Demo!

"On behalf of the Board, I’m thrilled to welcome Mike Andriole to Artios. As the company advances its lead program into later stages of clinical development, Mike’s extensive late-stage oncology experience and strategic focus make him a perfect fit to lead Artios," said Samantha Truex, newly appointed Board Chair. "I’d like to thank Niall for his outstanding leadership and dedication. He has built Artios based on fundamental scientific leadership in the DDR space and has been instrumental in guiding Artios from its discovery platform roots to having two DNA damage response-based therapeutic candidates in the clinic."

"Artios is entering its next chapter with tremendous momentum as a leader in the DDR field capable of redefining standards of care in the treatment of certain solid tumors," said Mike Andriole, Chief Executive Officer of Artios. "I’m excited to lead the company at this pivotal stage and build on its strong scientific foundation as we take alnodesertib into late-stage development and prepare for potential commercialization. I look forward to collaborating with the talented Artios team to deliver on our mission to bring life-changing first-in-class therapies to patients worldwide who have few treatment options."

Mike Andriole joins Artios after having most recently served as President, CEO and Director of Chimerix, Inc., where he led the company’s acquisition and development of dordaviprone (Modeyso), a first-in-class small molecule imipridone approved on August 6, 2025, as the first treatment for recurrent H3 K27M-mutant diffuse midline glioma, a type of malignant brain tumor in children and young adults. Chimerix was acquired in April 2025 by Jazz Pharmaceuticals in a $935 million all-cash transaction. Previously, he was Chief Financial Officer and head of corporate development at Endocyte, Inc., where he led a series of strategic transactions that culminated in a $2.1 billion all-cash acquisition by Novartis driven by the late-phase development of its first-in-class targeted radioligand therapy, Lu177-PSMA-617, which later became the first product approved specifically for PSMA-positive metastatic castration resistant prostate cancer (Pluvicto). Earlier in his career, Mike spent 16 years at Eli Lilly and Company in various financial, marketing, and global business development roles.

About Alnodesertib (ART0380)

Alnodesertib, formerly known as ART0380, is a first-in-class, orally administered, selective small molecule inhibitor of ataxia-telangiectasia and Rad3-related protein (ATR). Artios’ differentiated approach combines alnodesertib with a low dose of the chemotherapy irinotecan, targeting cancers with high endogenous replication stress, such as those with ATM protein deficiency. Data presented at the AACR (Free AACR Whitepaper) Annual Meeting 2025 from the ongoing STELLA Phase 1/2a clinical trial demonstrated a 50% confirmed overall response rate (cORR) in patients with ATM-negative solid tumors at the recommended Phase 2 dose (RP2D), along with a favorable safety profile. In addition, the data highlighted two confirmed complete responses in patients with heavily pretreated pancreatic cancer as well as partial responses in patients with pancreatic cancer, colorectal cancer, and six other ATM deficient tumor types.

On August 12, 2025 TriSalus Life Sciences, Inc. (Nasdaq: TLSI) (the "Company"), an oncology company integrating novel delivery technology with standard of care therapies, and its investigational immunotherapeutic to transform treatment for patients with solid tumors, reported financial results for the quarter ended June 30, 2025, and provides an operational update (Press release, TriSalus Life Sciences, AUG 12, 2025, View Source [SID1234655151]).

Schedule your 30 min Free 1stOncology Demo!
Discover why more than 1,500 members use 1stOncology™ to excel in:

Early/Late Stage Pipeline Development - Target Scouting - Clinical Biomarkers - Indication Selection & Expansion - BD&L Contacts - Conference Reports - Combinatorial Drug Settings - Companion Diagnostics - Drug Repositioning - First-in-class Analysis - Competitive Analysis - Deals & Licensing

                  Schedule Your 30 min Free Demo!

"TriSalus continued to deliver strong commercial momentum in the second quarter, underscoring the growing clinical adoption of our TriNav product suite and proprietary PEDD platform across a broad range of solid tumor indications," said Mary Szela, President and CEO of TriSalus. "We are pleased to reaffirm our full-year revenue growth guidance of 50%, reflecting increasing market penetration within liver-directed therapies. We will continue to invest in clinical data to extend the benefits of our PEDD technology platform to new embolization applications. With a strategic shift toward partnering development of Nelitolimod and an expanded focus on liver-directed therapies and new applications, we are energized by the opportunity to bring our PEDD technology to a wider range of patients which will not only support improved clinical outcomes but also drive deeper physician engagement and commercial momentum, fueling our long-term vision."

Second Quarter 2025 Highlights

Generated $11.2 million in net sales, a 52% increase year-over-year, and sequential growth of 22% over the first quarter 2025.
Continued strong commercial momentum with expanded use of TriNav in liver embolization and continued to further develop new applications in new clinical settings focused on the interventional radiology specialty.
Expanded product portfolio with the successful launch of TriNav FLX, the latest advancement in Pressure-Enabled Drug Delivery (PEDD). Designed with a more flexible distal tip, TriNav FLX enhances navigability through tortuous vessels—providing an effective solution for physicians previously limited by anatomical barriers to PEDD adoption. Early market response has been strong, with sales surpassing internal projections.
Subsequent to the second quarter, the Company simplified its capital structure through the successful completion of an exchange offering of previously issued Series A Preferred stock.
Second Quarter 2025 Financial Highlights

Revenue, all from the sale of the TriNav system, was $11.2 million for the three months ended June 30, 2025, an increase of 52% compared to the same period in 2024 and 22% sequential growth. Revenue growth was driven primarily by increased selling resources and increased market share.
Gross margins were 84% in the second quarter, compared to 88% in the same period of 2024. The year-over-year decline was primarily driven by lower manufacturing efficiency associated with newly launched products, a dynamic we expect to improve as production scales and processes mature over the course of the year.
Research and Development (R&D) expenses were approximately $3.9 million, compared to $4.7 million for the same quarter of the prior year. The decline in R&D costs is primarily a result of a decline in clinical trial costs relating to Nelitolimod.
Sales and Marketing (S&M) expenses were approximately $7.2 million in the second quarter, compared to $6.0 million for the same quarter of the prior year. The year-over-year increase reflects continued investment in the expansion of our commercial organization.
General & Administrative (G&A) expenses were approximately $5.7 million, compared to $4.0 million for the same quarter of the prior year. G&A costs include non-cash stock-based compensation of $1.2 million and $0.7 million, respectively, for the same periods. The increase in G&A costs is primarily a result of professional services related to legal services and audit.
Operating losses were $7.3 million, compared to Operating losses of $8.2 million for the same period in 2024. Current reductions in operating losses are due to reduced research and development expenses associated with the ramp-down of Nelitolimod clinical trial spending.
Net loss attributable to common stockholders was $9.0 million, compared to $5.1 million for the same period in 2024, primarily due to non-cash adjustments to the fair value of our contingent earnout liability.
The basic and diluted loss per share was $0.27, compared to $0.21 for the same period in 2024.
As of June 30, 2025, cash and cash equivalents totaled $26.5 million providing sufficient runway to reach positive adjusted EBITDA in the first half of 2026.
The non-GAAP measure of adjusted EBITDA is reconciled in the table below as the Company believes it is an important measure of performance. Adjusted EBITDA losses were $5.3 million, compared to losses of $6.7 million for the same period in 2024. Currently, reductions in adjusted EBITDA losses are due to increased sales, reduced research and development expenses and increased stock compensation in 2025.

Conference Call

The Company will host a conference call and webcast today at 4:30 PM eastern time to discuss its financial results for the quarter ended June 30, 2025. Parties interested in participating by phone should register using this online form. After registering for the webcast, dial-in details will be provided in an auto-generated e-mail containing a link to the conference phone number along with a personal pin. The event will also be webcast live on the investor relations section of TriSalus’ website. A replay will also be available on the website following the event.

On August 12, 2025 Pfizer Inc. (NYSE: PFE) and Astellas Pharma Inc. (TSE: 4503, President and CEO: Naoki Okamura, "Astellas") reported positive topline results from the Phase 3 EV-303 clinical trial (also known as KEYNOTE-905) (Press release, Astellas, AUG 12, 2025, View Source [SID1234655128]). The EV-303 study is evaluating PADCEVTM (enfortumab vedotin), a Nectin-4 directed antibody-drug conjugate, in combination with KEYTRUDATM (pembrolizumab), a PD-1 inhibitor, as neoadjuvant and adjuvant treatment (before and after surgery) versus surgery alone, the current standard of care, in patients with muscle-invasive bladder cancer (MIBC) who are not eligible for or declined cisplatin-based chemotherapy.

Schedule your 30 min Free 1stOncology Demo!
Discover why more than 1,500 members use 1stOncology™ to excel in:

Early/Late Stage Pipeline Development - Target Scouting - Clinical Biomarkers - Indication Selection & Expansion - BD&L Contacts - Conference Reports - Combinatorial Drug Settings - Companion Diagnostics - Drug Repositioning - First-in-class Analysis - Competitive Analysis - Deals & Licensing

                  Schedule Your 30 min Free Demo!

At the first interim efficacy analysis, the trial demonstrated a clinically meaningful and statistically significant improvement in event-free survival (EFS), the study’s primary endpoint, and overall survival (OS), a key secondary endpoint, with neoadjuvant and adjuvant PADCEV plus KEYTRUDA versus surgery alone. An additional secondary endpoint of pathologic complete response (pCR) rate was also met.

Christof Vulsteke, M.D., Ph.D., Head of Integrated Cancer Center Ghent (IKG, Belgium) and Clinical Trial Unit Oncology Ghent and EV-303 principal investigator
"Patients with muscle-invasive bladder cancer who are ineligible for cisplatin-based chemotherapy have not seen a significant treatment advance beyond surgery and face high rates of disease recurrence and a poor prognosis, even after having their bladder removed. These EV-303 study results mark the first time a systemic treatment approach, used before and after surgery, significantly extended survival over standard-of-care surgery in this population, demonstrating the potential of this combination to address a critical unmet patient need."

The trial is continuing to evaluate the secondary EFS, OS and pCR rate endpoints for neoadjuvant and adjuvant KEYTRUDA versus surgery alone as they continue to mature. The safety profiles for PADCEV plus KEYTRUDA and KEYTRUDA monotherapy were consistent with the known profiles of each treatment regimen.

Moitreyee Chatterjee-Kishore, Ph.D., M.B.A., Head of Oncology Development, Astellas
"These results from EV-303 represent a breakthrough for cisplatin-ineligible patients with muscle-invasive bladder cancer, demonstrating the potential of PADCEV in combination with KEYTRUDA when used before and after surgery as a new standard of care. We look forward to presenting further details on these data at an upcoming medical congress."

Bladder cancer is the ninth most common cancer worldwide, diagnosed in more than 614,000 patients each year globally.[i] MIBC represents approximately 30% of all bladder cancer cases.[ii] The standard treatment for patients with MIBC is neoadjuvant cisplatin-based chemotherapy followed by surgery, which has been shown to prolong survival.ii However, up to half of patients with MIBC are not eligible to receive cisplatin and face limited treatment options, typically undergoing surgery alone.[iii]

Johanna Bendell, M.D., Oncology Chief Development Officer, Pfizer
"PADCEV plus KEYTRUDA has already changed the treatment paradigm for patients with locally advanced or metastatic urothelial cancer as standard of care. These latest results underscore the practice-changing potential of this combination in earlier stages of bladder cancer, where it has the potential to improve outcomes for even more patients. Thank you to the patients and investigators who participated in this trial."

Results will be submitted for presentation at an upcoming medical congress and will be discussed with global health authorities for potential regulatory filings. Neoadjuvant and adjuvant PADCEV plus KEYTRUDA is also being evaluated in cisplatin-eligible patients with MIBC in the EV-304 Phase 3 clinical trial (also known as KEYNOTE-B15).

About the EV-303 Trial
The EV-303 trial is an ongoing, open-label, randomized, three-arm, controlled, Phase 3 study evaluating neoadjuvant and adjuvant PADCEV in combination with KEYTRUDA or neoadjuvant and adjuvant KEYTRUDA versus surgery alone in patients with MIBC who are either not eligible for or declined cisplatin-based chemotherapy. Patients were randomized to receive either neoadjuvant and adjuvant KEYTRUDA (arm A), surgery alone (arm B) or neoadjuvant and adjuvant PADCEV in combination with KEYTRUDA (arm C).[iv]

The primary endpoint of this trial is EFS between arm C versus arm B, defined as the time from randomization to the first occurrence of any of the following events: progression of disease that precludes radical cystectomy (RC) surgery or failure to undergo RC surgery in participants with residual disease, gross residual disease left behind at the time of surgery, local or distant recurrence as assessed by imaging and/or biopsy or death due to any cause. Key secondary endpoints include OS and pCR rate between arm C and arm B, as well as EFS, OS and pCR rate between arm A and arm B.iv

For more information on the global EV-303 trial, go to clinicaltrials.gov.

About PADCEVTM (enfortumab vedotin)
PADCEVTM (enfortumab vedotin) is a first-in-class antibody-drug conjugate (ADC) that is directed against Nectin-4, a protein located on the surface of cells and highly expressed in bladder cancer.[v] Nonclinical data suggest the anticancer activity of PADCEV is due to its binding to Nectin-4-expressing cells, followed by the internalization and release of the anti-tumor agent monomethyl auristatin E (MMAE) into the cell, which result in the cell not reproducing (cell cycle arrest) and in programmed cell death (apoptosis).[vi]

PADCEV plus KEYTRUDA is approved for the treatment of adult patients with locally advanced or metastatic urothelial cancer (la/mUC) regardless of cisplatin eligibility in the United States, the European Union, Japan and a number of other countries around the world. PADCEV is also approved as a single agent for the treatment of adult patients with la/mUC who have previously received a PD-1/PD-L1 inhibitor and platinum-containing chemotherapy or are ineligible for cisplatin-containing chemotherapy and have previously received one or more prior lines of therapy.vi

PADCEV (enfortumab vedotin-ejfv) U.S. Indication & Important Safety Information

BOXED WARNING: SERIOUS SKIN REACTIONS

PADCEV can cause severe and fatal cutaneous adverse reactions including Stevens-Johnson syndrome (SJS) and Toxic Epidermal Necrolysis (TEN), which occurred predominantly during the first cycle of treatment, but may occur later.
Closely monitor patients for skin reactions.
Immediately withhold PADCEV and consider referral for specialized care for suspected SJS or TEN or severe skin reactions.
Permanently discontinue PADCEV in patients with confirmed SJS or TEN; or Grade 4 or recurrent Grade 3 skin reactions.
Indication
PADCEV, in combination with pembrolizumab, is indicated for the treatment of adult patients with locally advanced or metastatic urothelial cancer (mUC).

PADCEV, as a single agent, is indicated for the treatment of adult patients with locally advanced or mUC who:

have previously received a programmed death receptor-1 (PD-1) or programmed death-ligand 1 (PD-L1) inhibitor and platinum-containing chemotherapy, or
are ineligible for cisplatin-containing chemotherapy and have previously received one or more prior lines of therapy.
PADCEV Important Safety Information

Warnings and Precautions

Skin reactions Severe cutaneous adverse reactions, including fatal cases of SJS or TEN occurred in patients treated with PADCEV. SJS and TEN occurred predominantly during the first cycle of treatment but may occur later. Skin reactions occurred in 70% (all grades) of the 564 patients treated with PADCEV in combination with pembrolizumab in clinical trials. When PADCEV was given in combination with pembrolizumab, the incidence of skin reactions, including severe events, occurred at a higher rate compared to PADCEV as a single agent. The majority of the skin reactions that occurred with combination therapy included maculo-papular rash, macular rash and papular rash. Grade 3-4 skin reactions occurred in 17% of patients (Grade 3: 16%, Grade 4: 1%), including maculo-papular rash, bullous dermatitis, dermatitis, exfoliative dermatitis, pemphigoid, rash, erythematous rash, macular rash, and papular rash. A fatal reaction of bullous dermatitis occurred in one patient (0.2%). The median time to onset of severe skin reactions was 1.7 months (range: 0.1 to 17.2 months). Skin reactions led to discontinuation of PADCEV in 6% of patients.

Skin reactions occurred in 58% (all grades) of the 720 patients treated with PADCEV as a single agent in clinical trials. Twenty-three percent (23%) of patients had maculo-papular rash and 34% had pruritus. Grade 3-4 skin reactions occurred in 14% of patients, including maculo-papular rash, erythematous rash, rash or drug eruption, symmetrical drug-related intertriginous and flexural exanthema (SDRIFE), bullous dermatitis, exfoliative dermatitis, and palmar-plantar erythrodysesthesia. The median time to onset of severe skin reactions was 0.6 months (range: 0.1 to 8 months). Among patients experiencing a skin reaction leading to dose interruption who then restarted PADCEV (n=75), 24% of patients restarting at the same dose and 24% of patients restarting at a reduced dose experienced recurrent severe skin reactions. Skin reactions led to discontinuation of PADCEV in 3.1% of patients.

Monitor patients closely throughout treatment for skin reactions. Consider topical corticosteroids and antihistamines, as clinically indicated. For persistent or recurrent Grade 2 skin reactions, consider withholding PADCEV until Grade ≤1. Withhold PADCEV and refer for specialized care for suspected SJS, TEN or for Grade 3 skin reactions. Permanently discontinue PADCEV in patients with confirmed SJS or TEN; or Grade 4 or recurrent Grade 3 skin reactions.

Hyperglycemia and diabetic ketoacidosis (DKA), including fatal events, occurred in patients with and without pre-existing diabetes mellitus, treated with PADCEV. Patients with baseline hemoglobin A1C ≥8% were excluded from clinical trials. In clinical trials of PADCEV as a single agent, 17% of the 720 patients treated with PADCEV developed hyperglycemia of any grade; 7% of patients developed Grade 3-4 hyperglycemia (Grade 3: 6.5%, Grade 4: 0.6%). Fatal events of hyperglycemia and DKA occurred in one patient each (0.1%). The incidence of Grade 3-4 hyperglycemia increased consistently in patients with higher body mass index and in patients with higher baseline A1C. The median time to onset of hyperglycemia was 0.5 months (range: 0 to 20 months). Hyperglycemia led to discontinuation of PADCEV in 0.7% of patients. Five percent (5%) of patients required initiation of insulin therapy for treatment of hyperglycemia. Of the patients who initiated insulin therapy for treatment of hyperglycemia, 66% (23/35) discontinued insulin at the time of last evaluation. Closely monitor blood glucose levels in patients with, or at risk for, diabetes mellitus or hyperglycemia. If blood glucose is elevated (>250 mg/dL), withhold PADCEV.

Pneumonitis/Interstitial Lung Disease (ILD) Severe, life-threatening or fatal pneumonitis/ILD occurred in patients treated with PADCEV. When PADCEV was given in combination with pembrolizumab, 10% of the 564 patients treated with combination therapy had pneumonitis/ILD of any grade and 4% had Grade 3-4. A fatal event of pneumonitis/ILD occurred in two patients (0.4%). The incidence of pneumonitis/ILD, including severe events, occurred at a higher rate when PADCEV was given in combination with pembrolizumab compared to PADCEV as a single agent. The median time to onset of any grade pneumonitis/ILD was 4 months (range: 0.3 to 26 months).

In clinical trials of PADCEV as a single agent, 3% of the 720 patients treated with PADCEV had pneumonitis/ILD of any grade and 0.8% had Grade 3-4. The median time to onset of any grade pneumonitis/ILD was 2.9 months (range: 0.6 to 6 months).

Monitor patients for signs and symptoms indicative of pneumonitis/ILD such as hypoxia, cough, dyspnea or interstitial infiltrates on radiologic exams. Evaluate and exclude infectious, neoplastic and other causes for such signs and symptoms through appropriate investigations. Withhold PADCEV for patients who develop Grade 2 pneumonitis/ILD and consider dose reduction. Permanently discontinue PADCEV in all patients with Grade 3 or 4 pneumonitis/ILD.

Peripheral neuropathy (PN) When PADCEV was given in combination with pembrolizumab, 67% of the 564 patients treated with combination therapy had PN of any grade, 36% had Grade 2 neuropathy, and 7% had Grade 3 neuropathy. The incidence of PN occurred at a higher rate when PADCEV was given in combination with pembrolizumab compared to PADCEV as a single agent. The median time to onset of Grade ≥2 PN was 6 months (range: 0.3 to 25 months).

PN occurred in 53% of the 720 patients treated with PADCEV as a single agent in clinical trials including 38% with sensory neuropathy, 8% with muscular weakness and 7% with motor neuropathy. Thirty percent of patients experienced Grade 2 reactions and 5% experienced Grade 3-4 reactions. PN occurred in patients treated with PADCEV with or without preexisting PN. The median time to onset of Grade ≥2 PN was 4.9 months (range: 0.1 to 20 months). Neuropathy led to treatment discontinuation in 6% of patients.

Monitor patients for symptoms of new or worsening PN and consider dose interruption or dose reduction of PADCEV when PN occurs. Permanently discontinue PADCEV in patients who develop Grade ≥3 PN.

Ocular disorders were reported in 40% of the 384 patients treated with PADCEV as a single agent in clinical trials in which ophthalmologic exams were scheduled. The majority of these events involved the cornea and included events associated with dry eye such as keratitis, blurred vision, increased lacrimation, conjunctivitis, limbal stem cell deficiency, and keratopathy. Dry eye symptoms occurred in 30% of patients, and blurred vision occurred in 10% of patients, during treatment with PADCEV. The median time to onset to symptomatic ocular disorder was 1.7 months (range: 0 to 30.6 months). Monitor patients for ocular disorders. Consider artificial tears for prophylaxis of dry eyes and ophthalmologic evaluation if ocular symptoms occur or do not resolve. Consider treatment with ophthalmic topical steroids, if indicated after an ophthalmic exam. Consider dose interruption or dose reduction of PADCEV for symptomatic ocular disorders.

Infusion site extravasation Skin and soft tissue reactions secondary to extravasation have been observed after administration of PADCEV. Of the 720 patients treated with PADCEV as a single agent in clinical trials, 1% of patients experienced skin and soft tissue reactions, including 0.3% who experienced Grade 3-4 reactions. Reactions may be delayed. Erythema, swelling, increased temperature, and pain worsened until 2-7 days after extravasation and resolved within 1-4 weeks of peak. Two patients (0.3%) developed extravasation reactions with secondary cellulitis, bullae, or exfoliation. Ensure adequate venous access prior to starting PADCEV and monitor for possible extravasation during administration. If extravasation occurs, stop the infusion and monitor for adverse reactions.

Embryo-fetal toxicity PADCEV can cause fetal harm when administered to a pregnant woman. Advise patients of the potential risk to the fetus. Advise female patients of reproductive potential to use effective contraception during PADCEV treatment and for 2 months after the last dose. Advise male patients with female partners of reproductive potential to use effective contraception during treatment with PADCEV and for 4 months after the last dose.

ADVERSE REACTIONS

Most common adverse reactions, including laboratory abnormalities (≥20%) (PADCEV in combination with pembrolizumab)
Increased aspartate aminotransferase (AST), increased creatinine, rash, increased glucose, PN, increased lipase, decreased lymphocytes, increased alanine aminotransferase (ALT), decreased hemoglobin, fatigue, decreased sodium, decreased phosphate, decreased albumin, pruritus, diarrhea, alopecia, decreased weight, decreased appetite, increased urate, decreased neutrophils, decreased potassium, dry eye, nausea, constipation, increased potassium, dysgeusia, urinary tract infection and decreased platelets.

Most common adverse reactions, including laboratory abnormalities (≥20%) (PADCEV monotherapy)
Increased glucose, increased AST, decreased lymphocytes, increased creatinine, rash, fatigue, PN, decreased albumin, decreased hemoglobin, alopecia, decreased appetite, decreased neutrophils, decreased sodium, increased ALT, decreased phosphate, diarrhea, nausea, pruritus, increased urate, dry eye, dysgeusia, constipation, increased lipase, decreased weight, decreased platelets, abdominal pain, dry skin.

EV-302 Study: 440 patients with previously untreated la/mUC (PADCEV in combination with pembrolizumab)
Serious adverse reactions occurred in 50% of patients treated with PADCEV in combination with pembrolizumab. The most common serious adverse reactions (≥2%) were rash (6%), acute kidney injury (5%), pneumonitis/ILD (4.5%), urinary tract infection (3.6%), diarrhea (3.2%), pneumonia (2.3%), pyrexia (2%), and hyperglycemia (2%). Fatal adverse reactions occurred in 3.9% of patients treated with PADCEV in combination with pembrolizumab including acute respiratory failure (0.7%), pneumonia (0.5%), and pneumonitis/ILD (0.2%).

Adverse reactions leading to discontinuation of PADCEV occurred in 35% of patients. The most common adverse reactions (≥2%) leading to discontinuation of PADCEV were PN (15%), rash (4.1%) and pneumonitis/ILD (2.3%). Adverse reactions leading to dose interruption of PADCEV occurred in 73% of patients. The most common adverse reactions (≥2%) leading to dose interruption of PADCEV were PN (22%), rash (16%), COVID‑19 (10%), diarrhea (5%), pneumonitis/ILD (4.8%), fatigue (3.9%), hyperglycemia (3.6%), increased ALT (3%) and pruritus (2.5%). Adverse reactions leading to dose reduction of PADCEV occurred in 42% of patients. The most common adverse reactions (≥2%) leading to dose reduction of PADCEV were rash (16%), PN (13%) and fatigue (2.7%).

EV-103 Study: 121 patients with previously untreated la/mUC who were not eligible for cisplatin-containing chemotherapy (PADCEV in combination with pembrolizumab)
Serious adverse reactions occurred in 50% of patients treated with PADCEV in combination with pembrolizumab; the most common (≥2%) were acute kidney injury (7%), urinary tract infection (7%), urosepsis (5%), sepsis (3.3%), pneumonia (3.3%), hematuria (3.3%), pneumonitis/ILD (3.3%), urinary retention (2.5%), diarrhea (2.5%), myasthenia gravis (2.5%), myositis (2.5%), anemia (2.5%), and hypotension (2.5%). Fatal adverse reactions occurred in 5% of patients treated with PADCEV in combination with pembrolizumab, including sepsis (1.6%), bullous dermatitis (0.8%), myasthenia gravis (0.8%), and pneumonitis/ILD (0.8%). Adverse reactions leading to discontinuation of PADCEV occurred in 36% of patients; the most common (≥2%) were PN (20%) and rash (6%). Adverse reactions leading to dose interruption of PADCEV occurred in 69% of patients; the most common (≥2%) were PN (18%), rash (12%), increased lipase (6%), pneumonitis/ILD (6%), diarrhea (4.1%), acute kidney injury (3.3%), increased ALT (3.3%), fatigue (3.3%), neutropenia (3.3%), urinary tract infection (3.3%), increased amylase (2.5%), anemia (2.5%), COVID‑19 (2.5%), hyperglycemia (2.5%), and hypotension (2.5%). Adverse reactions leading to dose reduction of PADCEV occurred in 45% of patients; the most common (≥2%) were PN (17%), rash (12%), fatigue (5%), neutropenia (5%), and diarrhea (4.1%).

EV-301 Study: 296 patients previously treated with a PD-1/L1 inhibitor and platinum-based chemotherapy (PADCEV monotherapy)
Serious adverse reactions occurred in 47% of patients treated with PADCEV; the most common (≥2%) were urinary tract infection, acute kidney injury (7% each), and pneumonia (5%). Fatal adverse reactions occurred in 3% of patients, including multiorgan dysfunction (1%), hepatic dysfunction, septic shock, hyperglycemia, pneumonitis/ILD, and pelvic abscess (0.3% each). Adverse reactions leading to discontinuation occurred in 17% of patients; the most common (≥2%) were PN (5%) and rash (4%). Adverse reactions leading to dose interruption occurred in 61% of patients; the most common (≥4%) were PN (23%), rash (11%), and fatigue (9%). Adverse reactions leading to dose reduction occurred in 34% of patients; the most common (≥2%) were PN (10%), rash (8%), decreased appetite, and fatigue (3% each).

EV-201, Cohort 2 Study: 89 patients previously treated with a PD-1/L1 inhibitor and not eligible for cisplatin-based chemotherapy (PADCEV monotherapy)
Serious adverse reactions occurred in 39% of patients treated with PADCEV; the most common (≥3%) were pneumonia, sepsis, and diarrhea (5% each). Fatal adverse reactions occurred in 8% of patients, including acute kidney injury (2.2%), metabolic acidosis, sepsis, multiorgan dysfunction, pneumonia, and pneumonitis/ILD (1.1% each). Adverse reactions leading to discontinuation occurred in 20% of patients; the most common (≥2%) was PN (7%). Adverse reactions leading to dose interruption occurred in 60% of patients; the most common (≥3%) were PN (19%), rash (9%), fatigue (8%), diarrhea (5%), increased AST, and hyperglycemia (3% each). Adverse reactions leading to dose reduction occurred in 49% of patients; the most common (≥3%) were PN (19%), rash (11%), and fatigue (7%).

DRUG INTERACTIONS
Effects of other drugs on PADCEV (Dual P-gp and Strong CYP3A4 Inhibitors)
Concomitant use with dual P-gp and strong CYP3A4 inhibitors may increase unconjugated monomethyl auristatin E exposure, which may increase the incidence or severity of PADCEV toxicities. Closely monitor patients for signs of toxicity when PADCEV is given concomitantly with dual P-gp and strong CYP3A4 inhibitors.

SPECIFIC POPULATIONS
Lactation Advise lactating women not to breastfeed during treatment with PADCEV and for 3 weeks after the last dose.

Hepatic impairment Avoid the use of PADCEV in patients with moderate or severe hepatic impairment.

For more information, please see the U.S. full Prescribing Information including BOXED WARNING for PADCEV here.