Investigator-initiated Phase 1/2 Clinical Trial Using Salarius Pharmaceuticals’ Seclidemstat in Combination with Azacitidine to Treat Hematologic Cancers Resumes Patient Enrollment
As reported on
“We are pleased that the FDA has removed the partial clinical hold on the MD Anderson trial with seclidemstat in blood cancers, and we are excited about the prospect of MD Anderson enrolling additional patients and building a broader database of patient data,” said
“We are also pleased to see that patients continuing treatment with seclidemstat and TC continue to improve. With our Food and Drug Administration Type B meeting process completed, we plan to file an amended Ewing protocol focusing on first relapse patients, who we believe will benefit from Seclidemstat and TC combination therapy,“ concluded
Seclidemstat is a novel oral reversible inhibitor of the LSD1 enzyme and has received fast track, orphan drug and rare pediatric disease designations for Ewing sarcoma from the FDA. In addition to the MDACC investigator-initiated clinical trial, seclidemstat has been studied in a company-sponsored Phase 1/2 clinical trial evaluating its use in combination with TC for the treatment of relapsed/refractory Ewing sarcoma.
Researchers at MDACC previously reported interim clinical trial results evaluating seclidemstat in combination with azacitidine for the treatment of myelodysplastic syndrome (MDS) and chronic myelomonocytic leukemia (CMML) patients who relapsed or progressed after hypomethylating agent therapy. Of eight evaluable patients, four (50%) had an objective response. These researchers reported a 90% probability of survival for 11 months in patients receiving seclidemstat plus azacitidine. Typically, overall survival is four to six months after failing therapy with hypomethylating agents.
The Company-sponsored Ewing sarcoma clinical trial focuses on seclidemstat in combination with TC as a treatment for relapsed and refractory Ewing sarcoma. As of
- The five first-relapse patients demonstrated a 60% ORR and a 60% DCR including a complete response and two partial responses. Among the three patients achieving ORR, the median progression-free survival (mPFS) has not been reached with these patients still having disease control and objectives responses at 17.4, 25.7 and 27.2 months, and increasing, after starting seclidemstat + TC combination treatment.
- The eight second-relapse patients demonstrated a 13% ORR, a 25% DCR and a mPFS of 1.6 months (range: 0.0 months to 10.7 months).
- Together the 13 first- and second-relapse patients demonstrated a mPFS of 8.1 months (range: 2.0 months to 27.2 months). Five patients, or 38%, achieved confirmed disease control and progression has not been observed in any of these patients while on study.
This press release contains “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. All statements, other than statements of historical facts, included in this press release are forward-looking statements. These forward-looking statements may be identified by terms such as “will,” “believe,” “developing,” “expect,” “may,” “progress,” “potential,” “could,” “look forward,” “encouraging,” “might,” “should,” and similar terms or expressions or the negative thereof. Examples of such statements include, but are not limited to, statements relating to the following: Salarius’ expectations regarding the exploration of strategic alternatives, opportunities to extend Salarius’ resources, the future of the Company’s operations and product candidates; the future of the Company’s preclinical studies and clinical trials and development activities; the advantages of protein degraders including the value of SP-3164 as a cancer treatment; the value of seclidemstat as a treatment for Ewing sarcoma, Ewing-related sarcomas, and other cancers and its ability to improve the life of patients. Salarius may not actually achieve the plans, carry out the intentions or meet the expectations or objectives disclosed in these forward-looking statements. You should not place undue reliance on these forward-looking statements. These statements are subject to risks and uncertainties which could cause actual results and performance to differ materially from those discussed in the forward-looking statements. These risks and uncertainties include, but are not limited to, the following: the risk that exploration of strategic alternatives may not result in any definitive transaction or enhance stockholder value and may create a distraction or uncertainty that may adversely affect our operating results, business, or investor perceptions; expectations regarding future costs and expenses; our product candidates being in early stages of development; the uncertainty about the paths of our programs and our ability to evaluate and identify a path forward for those programs, particularly given the constraints we have as a small company with limited financial, personnel and other operating resources (including with respect to the allocation of our limited capital and the sufficiency of our capital in the near term for any path we do select); Salarius’ ability to continue as a going concern; the sufficiency of Salarius’ capital resources; availability of suitable third parties with which to conduct contemplated strategic transactions; whether the Company will be able to pursue a strategic transaction, or whether any transaction, if pursued, will be completed successfully and on attractive terms or at all; whether our cash resources will be sufficient to fund the Company’s foreseeable and unforeseeable operating expenses and capital requirements; changes in the Company’s operating plans that may impact its cash expenditures; the uncertainties inherent in research and development, future clinical data and analysis; the risks associated with reductions in workforce, including reduced morale and attrition of additional employees necessary for the strategic reprioritization; future clinical trial results and the impact of such results on Salarius; that the results of studies and clinical trials may not be predictive of future clinical trial results; the competitive landscape and other industry-related risks; and other risks described in Salarius’ filings with the Securities and Exchange Commission, including its Annual Report on Form 10-K for the fiscal year ended
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Source: Salarius Pharmaceuticals, Inc.