On November 12, 2026 BlossomHill Therapeutics, Inc. (Nasdaq: BLSM), a clinical-stage biopharmaceutical company applying an intentional, chemistry-based approach to design and develop innovative small molecule medicines for the treatment of cancer, reported financial results for the third quarter 2026 and highlighted recent progress.
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 to have aligned with the FDA on a recommended Phase 2 dose of 50 mg BID based on favorable PK, safety and efficacy data in the Phase 1 portion of the SOLARA trial. We are now preparing to initiate SOLARA-2, a single arm, pivotal Phase 2 trial designed to evaluate BH-30643 in both chemotherapy-naive and chemotherapy-pretreated patients with C797S-positive NSCLC after progression on a third-generation EGFR TKI," said J. Jean Cui, Ph.D., Founder, President and Chief Executive Officer of BlossomHill Therapeutics. "In parallel, we continue to advance the development of novel, small molecule medicines in our portfolio. We recently presented preclinical data on BH-501284, our novel, pseudo-irreversible, Switch-II pan-KRAS inhibitor, that demonstrated sustained KRAS pathway suppression and deep and durable antitumor activity across multiple KRAS-mutant tumor models. An IND filing is planned for the first quarter next year. We also plan to present translational data with clinical validation of BH-30236’s mechanism of action at the American Society of Hematology (ASH) (Free ASH Whitepaper) Annual Meeting in December, reinforcing our belief in its potential to address a significant unmet need in patients with myeloid malignancies."
Recent Business Highlights and Corporate Updates:
Alignment with the FDA on 50 mg twice daily as the recommended Phase 2 dose based on favorable pharmacokinetic (PK), safety and efficacy data from the SOLARA Phase 1 trial
Announced SOLARA-2, the single-arm Phase 2 portion of the SOLARA trial, in patients with EGFR C797S-positive NSCLC to potentially support an accelerated approval application
Collaboration with Foundation Medicine to develop a companion diagnostic assay (CDx) for the EGFR C797S resistance mutation
Preclinical data on BH-501284, a novel, orally bioavailable, non-covalent, pseudo-irreversible pan-KRAS inhibitor designed to overcome limitations of current KRAS-targeted therapies, presented at the American Association for Cancer Research (AACR) (Free AACR Whitepaper) Conference on Pancreatic Cancer: New Frontiers in Biology and Therapeutic Development
Abstract highlighting the upcoming presentation of translational data providing further clinical validation of BH-30236’s mechanism of action at the American Society of Hematology (ASH) (Free ASH Whitepaper) Annual Meeting in December
Anticipated Upcoming Milestones:
BH-30643
Q1 2027: First patient dosed in pivotal SOLARA-2 trial
1H 2027: Updated Phase 1 data, including C797S durability
2H 2027: Phase 1 data on TKI-naive durability and initial chemo combo cohort data
BH-501284
Q1 2027: Investigational new drug application (IND) submission
BH-30236
1H 2027: Updated Phase 1 data on safety and anti-leukemic effect
Third Quarter 2026 Financial Results
Research and development (R&D) expenses for the third quarter of 2026 were $21.9 million, compared with $14.7 million for the same period in 2025. The increase of $7.3 million was primarily due to greater clinical development expenses related to BH-30643, increased personnel-related expenses driven by R&D headcount growth, and greater expenses related to IND-enabling work for BH-501284.
General and administrative (G&A) expenses for the third quarter of 2026 were $3.6 million, compared with $2.1 million for the same period in 2025. The increase of $1.5 million was primarily due to increased personnel-related expenses, greater general overhead and outside services expenses, and an increase in legal expenses.
Net loss for the third quarter of 2026 was $24.0 million, or ($1.29) per basic and diluted share, compared with $16.0 million, or ($6.54) per basic and diluted share for the same period in 2025. The increase in net loss was primarily attributable to increased operating expenses, partially offset by an increase in other income.
Cash and cash equivalents totaled $224.9 million as of September 30, 2026. BlossomHill completed its IPO in August 2026 in which it sold 10,516,240 shares of its common stock, including partial exercise of the over-allotment option, for gross proceeds of $168.3 million. BlossomHill believes that its cash and cash equivalents as of September 30, 2026, will be sufficient to fund its operations into the second quarter of 2028.
About BH-30643
BH-30643 is an investigational, novel, orally bioavailable, non-covalent, macrocyclic, brain active, mutant-selective, OMNI-EGFR inhibitor for the treatment of EGFR-mutant NSCLC. BH-30643 was designed to overcome the limitations of currently approved EGFR inhibitors, which were discovered over a decade ago without the current, modern understanding of the structure and protein dynamics of mutant EGFRs. In preclinical studies, BH-30643 demonstrated potent inhibitory activity across diverse EGFR mutation categories — classical mutations, on-target resistance mutations such as C797S with or without T790M, atypical mutations and exon 20 insertions — while maintaining marked selectivity over wild-type EGFR. BH-30643 has received Fast Track designation and is being evaluated in SOLARA, a global Phase 1/2, first-in-human clinical trial with ongoing Phase 1 dose expansion cohorts enrolling in both TKI-pretreated and TKI-naive settings, including a C797S resistance cohort. SOLARA-2, a global Phase 2 pivotal study in C797S-Positive NSCLC is scheduled to dose the first patient in the first quarter of 2027. For additional information on SOLARA, including a list of study sites and how to enroll, please visit clinicaltrials.gov (NCT06706076).
About BH-30236
BH-30236 is an investigational orally bioavailable, macrocyclic inhibitor of the CDC-like kinase (CLK) family. BH-30236 was intentionally designed to potently inhibit CLK, leading to modulation of aberrant alternative splicing in cancerous tissue, targeting the same aberrant splicing machinery that drives relapsed or refractory (R/R) acute myeloid leukemia (AML) and higher-risk myelodysplastic syndromes (HR-MDS) disease biology and that cancer cells exploit to develop resistance to venetoclax, FLT3 inhibitors and cytarabine. BH-30236 is being evaluated in a Phase 1/1b multicenter, open-label, first-in-human dose escalation and expansion trial in adults with R/R AML and HR-MDS. The U.S. Food and Drug Administration (FDA) has granted orphan drug designation to BH-30236 for the treatment of AML. For additional information on this trial, including a list of study sites and how to enroll, please visit clinicaltrials.gov (NCT06501196).
About BH-501284
BH-501284 is an investigational, orally bioavailable, pan-KRAS inhibitor, which utilizes a novel Switch-II chemical scaffold to achieve prolonged, potent and selective inhibition of KRAS mutations. We believe this molecule, which uses a non-covalent scaffold, is unique in its potential to achieve tight and durable binding, a feature described as "pseudo-irreversible" binding. In preclinical studies, BH-501284 demonstrated sustained blocking of KRAS signaling leading to deeper and more durable antitumor activities in KRAS mutant cells and tumor models at low dose levels.
(Press release, BlossomHill Therapeutics, NOV 12, 2026, View Source [SID1234674722])