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A Phase 1/2 Study of Vadastuximab Talirine (SGN-CD33A) in Combination With Azacitidine in Patients With Previously Untreated International Prognostic Scoring System (IPSS) Intermediate-2 or High Risk Myelodysplastic Syndrome (MDS)

Description

Brief Summary
This is a phase 1/2 study to evaluate the combination of vadastuximab talirine (SGN-CD33A; 33A) and azacitidine in subjects with previously untreated International Prognostic Scoring System (IPSS) Intermediate-2 or high risk myelodysplastic syndrome (MDS).


Detailed Description
In the phase 1 portion of the study, escalating doses of 33A will be evaluated in combination with azacitidine, and a dose of 33A will be selected to proceed to phase 2. The phase 2 portion of the study is randomized, double-blind and placebo-controlled; it is designed to compare the overall response rate (ORR) between 2 study arms.

Phase

Phase 1/2 - for trials that are a combination of phases 1 and 2.

Inclusion and Exclusion Criteria

  • Subjects with cytologically/histologically confirmed MDS according to the World Health Organization (WHO) 2008 classification.
  • Previously untreated for Myelodysplastic Syndrome (MDS)
  • Age ≥18 years of age.
  • Eligible for therapy with azacitidine.
  • Life expectancy of at least 12 weeks.
  • Eastern Cooperative Oncology Group (ECOG) performance status ≤2.
  • Adequate baseline laboratory parameters.

  • Received prior treatment for MDS with lenalidomide or hypomethylating agents (HMAs).
  • History of one of the following myeloproliferative neoplasms: essential thrombocythemia, polycythemia vera, and primary myelofibrosis.
  • Second malignancy currently requiring active therapy (except for hormonal/anti-hormonal treatment, eg, prostate or breast cancer).
  • Candidates for allogeneic stem cell transplant at the time of screening.

Sites

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