U.S. FDA approval of INLEXZO™ (gemcitabine intravesical system) set to transform how certain bladder cancers are treated

On September 9, 2025 Johnson & Johnson (NYSE:JNJ) reported the U.S. Food and Drug Administration (FDA) approved INLEXZO (gemcitabine intravesical system), a new, potentially practice-changing approach for treating patients with certain types of bladder cancer, addressing the need for additional options following unsuccessful BCG therapy and for patients refusing or ineligible for bladder removal surgery (radical cystectomy) (Press release, Johnson & Johnson, SEP 9, 2025, View Source [SID1234655883]). INLEXZO, previously referred to as TAR-200, is indicated for the treatment of adult patients with Bacillus Calmette-Guérin (BCG)-unresponsive, non-muscle invasive bladder cancer (NMIBC) with carcinoma in situ (CIS), with or without papillary tumors.

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INLEXZO is designed for patients seeking bladder preservation and is the first and only intravesical drug releasing system (iDRS) to provide extended local delivery of a cancer medication into the bladder. INLEXZO remains in the bladder for three weeks per treatment cycle for up to 14 cycles.1 A healthcare professional places INLEXZO into the bladder using a co-packaged urinary catheter and stylet to insert it into the bladder.1 INLEXZO is placed in an outpatient setting in a few minutes, without the need for general anesthesia or further monitoring immediately post-insertion within the healthcare provider’s office.1

"When we acquired this novel therapy in 2019, our ambition was to give patients with bladder cancer a renewed sense of hope and belief," said Jennifer Taubert, Executive Vice President, Worldwide Chairman, Innovative Medicine, Johnson & Johnson. "In an area that has seen little progress for more than 40 years, INLEXZO delivers a first-of-its-kind breakthrough innovation with a bright future ahead."

The approval is supported by data from the SunRISe-1 (NCT04640623) single arm, open-label Phase 2b clinical study.1 Results show 82 percent of patients with BCG-unresponsive NMIBC treated with INLEXZO achieved a complete response (CR), meaning no signs of cancer were found after treatment (95 percent confidence interval [CI], 72, 90).1 This high response rate demonstrated strong durability, and 51 percent of these patients maintained a complete response for at least one year.1

In the SunRISe-1 clinical trial supporting this approval, the most common adverse reactions (≥15 percent) including laboratory abnormalities, were urinary frequency, urinary tract infection, dysuria, micturition urgency, decreased hemoglobin, increased lipase, urinary tract pain, decreased lymphocytes, hematuria, increased creatinine, increased potassium, increased aspartate aminotransferase (AST), decreased sodium, bladder irritation, and increased alanine transaminase (ALT).1

"I see many patients that ultimately become BCG-unresponsive and often face life-altering bladder removal. These patients now may be ideal candidates for newly approved INLEXZO," said Sia Daneshmand, M.D., TAR-200 SunRISe-1 principal investigator, and Professor of Urology, Director of Urologic Oncology at the Norris Comprehensive Cancer Center, Keck School of Medicine of University of Southern California.* "In my experience, INLEXZO is well-tolerated and delivers clinically meaningful results. This will change the way we treat appropriate patients that haven’t responded to traditional therapy."

"We are proud of the science that has brought us to this historic moment," said John Reed, M.D., Ph.D., Executive Vice President, R&D, Innovative Medicine, Johnson & Johnson. "INLEXZO is a novel therapy with powerful efficacy and demonstrated safety profile. As the only major healthcare company that hosts both pharmaceuticals and medical devices, we leveraged the speed and scale of Johnson & Johnson to accelerate innovation and deliver this important therapy to patients."

"At BCAN, our mission has always been to advocate for better todays and more tomorrows for everyone impacted by bladder cancer. This approval represents the kind of progress that brings new options to a community that urgently needs them," said Meri-Margaret Deoudes, CEO, Bladder Cancer Advocacy Network (BCAN).** "Patients with bladder cancer need guidance and collaboration with providers to navigate bladder-sparing treatment options, including newly approved treatments like INLEXZO, so they can move forward feeling well-informed and confident."

Leading to today’s approval, the FDA granted INLEXZO Breakthrough Therapy Designation (BTD), Real-Time Oncology Review (RTOR), and Priority Review.

Johnson & Johnson is committed to helping patients access our treatments. Once a patient and their doctor have decided that INLEXZO is right for the patient, J&J withMe provides a simple, comprehensive patient support program offering cost support, a dedicated Care Navigator and educational resources, at no cost to the patient.

About SunRISe-1, Cohort 2
SunRISe-1 (NCT04640623), Cohort 2, was a single arm, open-label Phase 2b clinical study that evaluated the safety and efficacy of INLEXZO monotherapy for BCG-unresponsive NMIBC patients with carcinoma in situ (CIS) with or without papillary tumors who are ineligible for, or elected not to undergo, radical cystectomy. The primary endpoint for Cohort 2 was complete response (CR) rate at any time point, and secondary endpoints include duration of response (DOR).

About Non-Muscle Invasive Bladder Cancer (NMIBC) and the Current Standard of Care
Non-muscle invasive bladder cancer (NMIBC) is a type of non-invasive bladder cancer that can be classified as low, intermediate, or high risk depending on the presence of characteristics including tumor size, presence of multiple tumors, and carcinoma in situ (CIS).2 NMIBC with CIS makes up approximately 10 percent of patients with NMIBC.3 The current standard of care for NMIBC is Bacillus Calmette-Guérin (BCG), which is a weakened form of the bacteria found in tuberculosis treatment. Though effective, some patients become unresponsive to it and may experience challenges.4,5 Radical cystectomy is currently recommended for NMIBC patients who fail BCG therapy; it is a life-altering surgery with a high degree of morbidity and adverse impact on life, and has a post-surgery mortality rate of three to eight percent.6,7 Given that NMIBC typically affects older patients, many may be unwilling or unfit to undergo radical cystectomy.

About INLEXZO
INLEXZO is approved by the U.S. Food and Drug Administration (FDA) for the treatment of adult patients with Bacillus Calmette-Guérin (BCG)-unresponsive, non-muscle invasive bladder cancer (NMIBC) with carcinoma in situ (CIS), with or without papillary tumors. INLEXZO is an intravesical system enabling extended release of gemcitabine into the bladder. It is placed in a few minutes without general anesthesia or further monitoring immediately post-insertion within the healthcare provider’s office. For more information, visit INLEXZO.com.

The safety and efficacy of INLEXZO is being evaluated in clinical trials in patients with MIBC in SunRISe-4, and NMIBC in SunRISe-1, SunRISe-3, and SunRISe-5.

INLEXZO INDICATION AND IMPORTANT SAFETY INFORMATION

INDICATION
INLEXZO (gemcitabine intravesical system) is indicated for the treatment of adult patients with Bacillus Calmette-Guérin (BCG)-unresponsive, non-muscle invasive bladder cancer (NMIBC) with carcinoma in situ (CIS), with or without papillary tumors.

IMPORTANT SAFETY INFORMATION

CONTRAINDICATIONS
INLEXZO is contraindicated in patients with:

Perforation of the bladder.
Prior hypersensitivity reactions to gemcitabine or any component of the product.
WARNINGS AND PRECAUTIONS

Risks in Patients with Perforated Bladder
INLEXZO may lead to systemic exposure to gemcitabine and to severe adverse reactions if administered to patients with a perforated bladder or to those in whom the integrity of the bladder mucosa has been compromised.

Evaluate the bladder before the intravesical administration of INLEXZO and do not administer to patients with a perforated bladder or mucosal compromise until bladder integrity has been restored.

Risk of Metastatic Bladder Cancer with Delayed Cystectomy
Delaying cystectomy in patients with BCG-unresponsive CIS could lead to development of muscle invasive or metastatic bladder cancer, which can be lethal. The risk of developing muscle invasive or metastatic bladder cancer increases the longer cystectomy is delayed in the presence of persisting CIS.

Of the 83 evaluable patients with BCG-unresponsive CIS treated with INLEXZO in Cohort 2 of SunRISe-1, 7 patients (8%) progressed to muscle invasive (T2 or greater) bladder cancer. Three patients (3.5%) had progression determined at the time of cystectomy. The median time between determination of persistent or recurrent CIS or T1 and progression to muscle invasive disease was 94 days.

Magnetic Resonance Imaging (MRI) Safety
INLEXZO can only be safely scanned with MRI under certain conditions. Refer to section 5.3 of the USPI for details on conditions.

Embryo-Fetal Toxicity
Based on animal data and its mechanism of action, INLEXZO can cause fetal harm when administered to a pregnant woman if systemic exposure occurs. In animal reproduction studies, systemic administration of gemcitabine was teratogenic, embryotoxic, and fetotoxic in mice and rabbits.

Advise pregnant women and females of reproductive potential of the potential risk to a fetus. Advise females of reproductive potential to use effective contraception during treatment and for 6 months after final removal of INLEXZO. Advise male patients with female partners of reproductive potential to use effective contraception during treatment and for 3 months after final removal of INLEXZO.

ADVERSE REACTIONS
Serious adverse reactions occurred in 24% of patients receiving INLEXZO. Serious adverse reactions that occurred in >2% of patients included urinary tract infection, hematuria, pneumonia, and urinary tract pain. Fatal adverse reactions occurred in 1.2% of patients who received INLEXZO, including cognitive disorder.

The most common (>15%) adverse reactions, including laboratory abnormalities, were urinary frequency, urinary tract infection, dysuria, micturition urgency, decreased hemoglobin, increased lipase, urinary tract pain, decreased lymphocytes, hematuria, increased creatinine, increased potassium, increased AST, decreased sodium, bladder irritation, and increased ALT.

USE IN SPECIFIC POPULATIONS

Pregnancy
There are no available data on the use of INLEXZO in pregnant women to inform a drug-associated risk.

Please see Embryo-Fetal Toxicity for risk information related to pregnancy.

Lactation
Because of the potential for serious adverse reactions in breastfed infants, advise women not to breastfeed during treatment and for 1 week after final removal of INLEXZO.

Females and Males of Reproductive Potential
Pregnancy Testing – Verify pregnancy status in females of reproductive potential prior to initiating INLEXZO.

Contraception – Please see Embryo-Fetal Toxicity for information regarding contraception.

Infertility (Males) – Based on animal studies, INLEXZO may impair fertility in males of reproductive potential. It is not known whether these effects on fertility are reversible.

Geriatric Use
Of the patients given INLEXZO monotherapy in Cohort 2 of SunRISe-1, 72% were 65 years of age or older and 34% were 75 years or older. There were insufficient numbers of patients <65 years of age to determine if these patients respond differently to patients 65 years of age and older.

Please read full Prescribing Information and Instructions for Use for INLEXZO.

Celldex to Present at Morgan Stanley 23rd Annual Global Healthcare Conference

On September 9, 2025 Celldex Therapeutics, Inc. (NASDAQ:CLDX) reported that management will participate in a fireside chat today, September 9th, 2025, at the Morgan Stanley 23rd Annual Global Healthcare Conference at 3:20 pm ET (Press release, Celldex Therapeutics, SEP 9, 2025, View Source [SID1234655882]). A live webcast of the presentation will be available on the "Events & Presentations" page of the "Investors" section of the Celldex website. A replay will be available for 90 days following the event.

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Xilio Therapeutics Announces Initiation of Phase 2 Trial for Efarindodekin Alfa (XTX301), a Tumor-Activated IL-12, and Achievement of $17.5 Million Development Milestone Under Exclusive License Agreement with Gilead

On September 9, 2025 Xilio Therapeutics, Inc. (Nasdaq: XLO), a clinical-stage biotechnology company discovering and developing tumor-activated immuno-oncology therapies for people living with cancer, reported the initiation of patient dosing in Phase 2 of an ongoing Phase 1/2 clinical trial evaluating efarindodekin alfa (XTX301), a tumor-activated IL-12, as a monotherapy in patients with certain advanced solid tumors (Press release, Xilio Therapeutics, SEP 9, 2025, View Source [SID1234655881]). In addition, today Xilio announced the achievement of a $17.5 million development milestone under Xilio’s license agreement with Gilead Sciences, Inc. (Gilead) and updated data from the ongoing Phase 1 trial for efarindodekin alfa.

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"We are pleased to announce the initiation of the Phase 2 clinical trial for efarindodekin alfa (XTX301), a tumor-activated IL-12, in patients with advanced solid tumors," said René Russo, Pharm.D., president and chief executive officer of Xilio. "The achievement of this important milestone highlights the promising Phase 1 data demonstrated for efarindodekin alfa to date, including two partial responses in late-line patients with advanced solid tumors and a generally well-tolerated safety profile. These data also provide further clinical validation for our proprietary masking technology and approach, which we believe is best-in-class and has potential across a wide range of therapies and modalities."

"We are encouraged by the totality of data observed to date for efarindodekin alfa (XTX301) as a monotherapy in patients with advanced solid tumors, and we are excited for the potential that IL-12 has to treat a broad range of tumor types," said Bernard Fine, vice president, oncology early development at Gilead. "We look forward to advancing the efarindodekin alfa (XTX301) program in the Phase 2 trial in partnership with Xilio."

Efarindodekin alfa (XTX301): tumor-activated IL-12

Efarindodekin alfa (XTX301) is an investigational tumor-activated IL-12 designed to potently stimulate anti-tumor immunity and reprogram the tumor microenvironment (TME) of poorly immunogenic "cold" tumors towards an inflamed or "hot" state. In March 2024, Xilio entered into an exclusive license agreement with Gilead related to Xilio’s tumor-activated IL-12 program, including efarindodekin alfa. Xilio is evaluating efarindodekin alfa as a monotherapy in an ongoing Phase 1/2 clinical trial in patients with advanced solid tumors.

·

As of a data cutoff date of September 2, 2025, at dose levels up to the recommended Phase 2 dose (RP2D), efarindodekin alfa has been generally well-tolerated in Phase 1, and the majority of treatment-related adverse events were Grade 1 or 2.

·
In Phase 1 as of the data cutoff date, efarindodekin alfa has also demonstrated encouraging anti-tumor activity, including two partial responses in patients with advanced solid tumors (one confirmed, one unconfirmed), as well as sustained interferon gamma (IFNɣ) signaling without evidence of tachyphylaxis throughout treatment cycles.

·
Based on these promising Phase 1 data, Xilio recently selected an initial RP2D and schedule for efarindodekin alfa and initiated patient dosing in the Phase 2 portion of the trial evaluating efarindodekin alfa as a monotherapy in patients with certain advanced solid tumors.

In connection with the initiation of Phase 2, Xilio achieved a development milestone of $17.5 million.

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Xilio recently completed enrollment in Phase 1A monotherapy dose escalation and evaluation of those patients is ongoing. In addition, Xilio continues to enroll patients in the Phase 1B monotherapy dose expansion portion of the ongoing Phase 1/2 clinical trial of efarindodekin alfa.

Efarindodekin alfa has not been approved by any regulatory agency and its efficacy and safety have not been established.

Financial Guidance

As of June 30, 2025, Xilio had cash and cash equivalents of $121.6 million. Based on its current operating plans, Xilio anticipates that its cash and cash equivalents as of June 30, 2025, together with the $17.5 million development milestone achieved under the license agreement with Gilead, will be sufficient to enable it to fund its operating expenses and capital expenditure requirements into the first quarter of 2027. Xilio expects to receive payment of the $17.5 million development milestone by the fourth quarter of 2025.

About the Gilead License Agreement

In March 2024, Xilio entered into an exclusive global license agreement with Gilead to develop and commercialize efarindodekin alfa (XTX301), a tumor-activated IL-12, and specified other molecules directed to IL-12.

Xilio is responsible for conducting clinical development for efarindodekin alfa through the initial Phase 2 portion of the ongoing Phase 1/2 clinical trial. Following the delivery by Xilio of a specified clinical data package for efarindodekin alfa related to the Phase 1/2 clinical trial, Gilead can elect to transition responsibilities for the development and commercialization of efarindodekin alfa to Gilead, subject to the terms of the license agreement and payment by Gilead of a $75.0 million transition fee.

If Gilead exercises its option for efarindodekin alfa, Xilio will be eligible to receive up to $500.0 million in specified development, regulatory and sales-based milestones and will be eligible to receive tiered royalties ranging from high single digits to mid-teens on annual global net product sales.

About Efarindodekin Alfa (XTX301) and the Phase 1/2 Clinical Trial

Efarindodekin alfa (XTX301) is an investigational masked IL-12 designed to potently stimulate anti-tumor immunity and reprogram the tumor microenvironment (TME) of poorly immunogenic "cold" tumors towards an inflamed or "hot" state. In March 2024, Xilio entered into an exclusive license agreement with Gilead Sciences, Inc. for Xilio’s tumor-activated IL-12 program, including efarindodekin alfa. Xilio is currently evaluating the safety and tolerability of efarindodekin alfa as a monotherapy in patients with advanced solid tumors in the Phase 1 portion of a first-in-human, multi-center, open-label Phase 1/2 clinical trial and the safety and efficacy of efarindodekin alfa as a monotherapy in the Phase 2 portion in patients with advanced solid tumors. The Phase 2 portion of the trial is anticipated to enroll approximately 40 patients in specific tumor types at multiple sites in the United States. Please refer to NCT05684965 on www.clinicaltrials.gov for additional details.

Company presentation

On September 9, 2025 Tscan therapeutics presented its corporate presentation (Presentation, TScan Therapeutics, SEP 9, 2025, View Source [SID1234655880]).

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Libtayo® (cemiplimab) Plus Chemotherapy Results at Five Years Reinforce Significant and Durable Improvements in Survival Outcomes for Advanced Non-small Cell Lung Cancer

On September 9, 2025 Regeneron Pharmaceuticals, Inc. (NASDAQ: REGN) reported five-year follow-up results on overall survival (OS) from the Phase 3 EMPOWER-Lung 3 trial, which evaluated Libtayo (cemiplimab) plus platinum-based chemotherapy versus chemotherapy alone as a first-line treatment for adults with locally advanced or metastatic non-small cell lung cancer (NSCLC) with no EGFR, ALK or ROS1 aberrations (Press release, Regeneron, SEP 9, 2025, View Source [SID1234655879]). The late-breaking data will be presented in a mini oral session at the IASLC 2025 World Conference on Lung Cancer (WCLC) hosted by the International Association for the Study of Lung Cancer.

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"After more than five years of follow-up, the EMPOWER-Lung 3 trial continues to demonstrate sustained survival – with an impressive overall survival probability of 19.4% at five years – when Libtayo is added to chemotherapy in patients with advanced non-small cell lung cancer," said Ana Baramidze, M.D., Ph.D., Head of Clinical Research Department at Todua Clinic, Tbilisi, Georgia. "Long-term results across tumor histologies were also reported, including a notable 22.3-month median overall survival for squamous NSCLC patients. Collectively, these data underscore Libtayo’s utility across a variety of patient types, both as a single agent and in combination with chemotherapy."

The five-year results for Libtayo plus chemotherapy presented at WCLC add to the breadth of long-term data for Libtayo in advanced NSCLC, including five-year outcomes from the EMPOWER-Lung 1 trial that were presented at WCLC 2024 confirming durable survival benefit as monotherapy.

At this year’s WCLC, five-year efficacy results, with a median follow-up of 60.9 months, found Libtayo plus chemotherapy remained superior to chemotherapy alone:

21.1-month median OS versus 12.9 months, representing a 34% reduction in the risk of death (hazard ratio [HR]: 0.66; 95% confidence interval [CI]: 0.53–0.83). The five-year probability of survival was 19.4% for the Libtayo combination versus 8.8% for chemotherapy.
8.2-month median progression-free survival (PFS) versus 5.5 months, representing a 42% reduction in the risk of disease progression (HR: 0.58; 95% CI: 0.47–0.72).
43.6% objective response rate (ORR) versus 22.1%. The ORR included a complete response rate of 6.4% versus 0%.      
16.4-month median duration of response (DoR) versus 7.3 months.
Also presented at WCLC were exploratory subgroup analyses that demonstrated survival benefits for patients treated with Libtayo plus chemotherapy compared to chemotherapy alone regardless of tumor histology or PD-L1 expression level. Specific efficacy results included a:

22.3-month median OS among patients with squamous histology (n=133) versus 13.8 months (n=67), representing a 32% reduction in risk of death (HR: 0.68; 95% CI: 0.49–0.94).
19.4-month median OS among patients with non-squamous histology (n=179) versus 12.4 months (n=87), representing a 38% reduction in risk of death (HR: 0.62, 95% CI: 0.46–0.82).
24.0-month median OS among patients with PD-L1 ≥1% (n=217) versus 12.1 months (n=110), representing a 46% reduction in risk of death (HR: 0.54; 95% CI: 0.41–0.70).
The safety profile at five years remained consistent with previously reported data. The median duration of exposure was 39 weeks to Libtayo plus chemotherapy and 21 weeks to chemotherapy alone. Adverse events (AEs) of any grade occurred in 96.5% of Libtayo plus chemotherapy patients (49% ≥Grade 3) and 95% of chemotherapy patients (33% ≥Grade 3). The most common AEs of any grade occurring in at least 10% of Libtayo plus chemotherapy patients included anemia (46%), alopecia (38%), nausea (25%), increase of alanine aminotransferase (18%), arthralgia (18%), decreased appetite (18%), hyperglycemia (18%), increase of aspartate transaminase (16%), neutropenia (16%), fatigue (15%), constipation (14%), thrombocytopenia (14%), dyspnea (14%), asthenia (13.5%), vomiting (13%), decreased weight (13%), increased blood creatinine (13%), insomnia (12%), hypoalbuminemia (11%), diarrhea (11%). Among Libtayo patients, treatment-related adverse events were ≥Grade 3 in 30% and led to permanent discontinuation in 4.5% and death in 1%, compared to 18%, 1% and 0.7% in the chemotherapy arm, respectively.

About the Phase 3 Trial
The randomized, multicenter Phase 3 trial, called EMPOWER-Lung 3, investigated a first-line combination treatment of Libtayo and platinum-doublet chemotherapy, compared to platinum-doublet chemotherapy alone. The trial enrolled 466 patients with locally advanced or metastatic NSCLC, as well as squamous or non-squamous histologies across all PD-L1 expression levels and with no ALK, EGFR and ROS1 aberrations.

Patients were randomized 2:1 to receive either Libtayo 350 mg (n=312) or placebo (n=154) administered intravenously every 3 weeks for 108 weeks, plus platinum-doublet chemotherapy administered every 3 weeks for 4 cycles. The primary endpoint was OS, and key secondary endpoints were PFS and ORR. The probability of survival and PFS were calculated according to Kaplan-Meier estimates.

Notably, patients in the trial had a variety of baseline characteristics commonly considered difficult-to-treat. Among those enrolled, 43% had tumors with squamous histology, 67% had tumors with <50% PD-L1 expression, 15% had inoperable locally advanced disease not eligible for definitive chemoradiation, and 7% had pretreated and clinically stable brain metastases. Additionally, 84% of patients had an ECOG 1 performance status. ECOG performance status assesses patient ability to conduct daily living activities and prognosis on a scale of increasing severity ranging from 0 (no symptoms) to 5 (death).