Ryvu Announces Partial Clinical Hold of Phase Ib Clinical Trial of RVU120 (SEL120) in Acute Myeloid Leukemia and Myelodysplastic Syndrome

KRAKOW, Poland – Ryvu Therapeutics (WSE:RVU), a clinical stage drug discovery and development company focusing on novel small molecule therapies that address emerging targets in oncology, announced today that the U.S. Food and Drug Administration, FDA, has placed a partial clinical hold on the first in human phase Ib, dose escalation clinical trial of RVU120 (also known as SEL120) in patients with relapsed/refractory (R/R) AML and high-risk MDS, being conducted in the United States.  Patients who are currently taking RVU120 may continue treatment in the study. No new patients may be enrolled in the study until the partial clinical hold is lifted by the FDA.

Ryvu received the clinical hold letter from the FDA on April 8th and plans to work diligently with the agency to address the comments and request, in order to resolve the partial clinical hold.

The partial clinical hold was initiated following Ryvu’s recent report to the FDA of a Serious Adverse Event involving a patient death that may possibly be related to RVU120. One of the two patients enrolled in Cohort 5, 110 mg dose level, of RVU120 experienced a fatal incidence of “Worsening  Pancreatitis. The other patient in the same study cohort, completed the 1st treatment cycle without any serious adverse events (SAE) reported by the investigational site and entered Cycle 2. There are currently two patients continuing to receive treatment with RVU120 in the study.

“Patient safety is Ryvu’s priority,” said Pawel Przewiezlikowski, CEO of Ryvu.  “Based on the totality of the data we have for RVU120, we believe that it continues to be a promising treatment option for cancer patients, and we will continue to work closely with the FDA to resolve the partial clinical hold with the objective of resuming enrollment in the study. We remain on track to present detailed interim safety and efficacy data at upcoming scientific conferences.”

About Ryvu Therapeutics

Ryvu Therapeutics is a clinical stage drug discovery and development company developing novel small molecule therapies that address emerging targets in oncology. Pipeline candidates make use of diverse therapeutic mechanisms driven by emerging knowledge of cancer biology, including small molecules directed at kinase, synthetic lethality, immuno-oncology and cancer metabolism targets. RVU120 (SEL120) is a selective CDK8/CDK19 kinase inhibitor with potential for the treatment of hematological malignancies and solid tumors currently in Phase Ib clinical development for the treatment of acute myeloid leukemia and myelodysplastic syndrome. The second clinical program of Ryvu is SEL24(MEN1703), a dual PIM/FLT3 kinase inhibitor licensed to the Menarini Group, currently in Phase II clinical studies in acute myeloid leukemia. Other Ryvu programs developed through internal discovery platform are focused on new oncology targets.

The Company was founded in 2007 (until 2019 operating under the name Selvita S.A.) and currently employs more than 150 associates, including more than 80 PhDs. Ryvu is headquartered in Krakow, Poland. Ryvu Therapeutics is listed on the main market of the Warsaw Stock Exchange, and has been a component of sWIG80 index since March 2017. For more information, please see www.ryvu.com


Natalia Baranowska (corporate) , +48 784 069 418, [email protected]

Julia Balanova (investors) , +1 646 378 2936, [email protected]