The Schall Law Firm is investigating Replimune Group, Inc. for potential securities law violations related to allegedly false or misleading statements. The company received a complete response letter from the FDA regarding its BLA for RP1 in combination with nivolumab for advanced melanoma treatment, citing disagreement over data suitability. Following this announcement on April 10, 2026, Replimune's stock price fell approximately 64.3% on April 13, 2026.

The global oncolytic virus immunotherapy market is projected to reach over $5 billion by 2031, with three approved therapies and more than 150 candidates in clinical trials. Major pharmaceutical companies and biotechnology firms are advancing combination therapies and strategic partnerships to address cancer treatment challenges, with significant clinical development underway across multiple indications.

Replimune announced it received a Complete Response Letter (CRL) from the FDA for its RP1 biologics license application in combination with nivolumab for advanced melanoma treatment. Despite the drug showing a 34% response rate with 24.8-month median duration in the IGNYTE trial, the FDA rejected approval. The company criticized the FDA's regulatory process and announced it will scale back operations and eliminate jobs, stating the treatment will not be available to patients due to systemic failures rather than drug efficacy.

The global oncolytic virotherapy market is projected to grow from USD 49.73 million in 2025 to USD 153.31 million by 2031, with a CAGR of 20.64%. Growth is driven by rising cancer incidence, advances in genetic engineering, and synergistic combination therapies with checkpoint inhibitors. However, host immune system challenges and premature viral clearance remain significant obstacles to market expansion.

Replimune presented biomarker data showing RP1 plus nivolumab can potentially reverse resistance mechanisms to PD-1 blockade in advanced melanoma, demonstrating a 33.6% response rate and 24.8-month median response duration.

Replimune Group's stock surged after the FDA accepted its resubmitted Biologics License Application for RP1, an investigational drug targeting advanced melanoma when combined with Bristol Myers Squibb's Opdivo.

Replimune Group resubmitted a Biologics License Application to the FDA for RP1, an oncolytic immunotherapy for advanced melanoma patients who progressed on anti-PD-1 therapy. The PDUFA date is set for April 10, 2026.

Replimune reported positive phase 2 clinical trial results for RP1, an oncolytic immunotherapy, when combined with nivolumab in treating acral melanoma. The treatment showed a 44% objective response rate and a favorable safety profile for patients who had progressed on previous therapies.

Replimune's stock plummeted 45% after the FDA rejected its Biologics License Application for RP1, a cancer drug, citing inadequate trial design. A securities class action lawsuit alleges the company misled investors about the drug's prospects.

Faruqi & Faruqi, LLP is investigating potential securities claims against Replimune Group after the FDA issued a Complete Response Letter for their RP1 Biologics License Application, causing the stock to drop over 73%.

Rosen Law Firm reminds Replimune Group investors of an important September 22, 2025 deadline for a securities class action lawsuit, alleging the company made false or misleading statements about its IGNYTE trial prospects.

Rosen Law Firm alerts investors of Replimune Group and RxSight who suffered losses over $100,000 about an upcoming September 22, 2025 deadline for filing securities class action lawsuits related to allegedly misleading statements.