WT1 Immunity Via DNA Fusion Gene Vaccination in Haematological Malignancies by Intramuscular Injection Followed by Intramuscular Electroporation

Summary

The study is not currently recruiting new subjects due to an interruption in funding from its sponsors. Efforts are under way to re-establish funding, however, the study is currently on-hold pending the outcome of these re-funding efforts. There have been no safety concerns identified during the study This is an open label, single dose level, phase II study in two patient groups (CML and AML) using genetic randomisation. Consented and eligible HLA A2+ve patients will be vaccinated with two DNA vaccines and HLA A2 -ve patients will be followed up with molecular monitoring only. The objectives are to evaluate: 1) Molecular response following p.DOM-epitope DNA vaccination in patients with CML (BCR-ABL, WT1) and AML (WT1) at weeks 4, 8, 12, 16, 20 and at months 6, 12, 18 and 24. 2) Time to disease progression, 2 year survival rate (patients with AML) 3) Correlation of molecular responses with immunological responses. Primary Objective: CML: Molecular response of BCR-ABL. AML: Time to disease progression. Secondary Objective: Molecular response of WT1 transcript levels, immune responses to WT1 and DOM, Toxicity, CML-Time to disease progression, next treatment and survival, AML-2 year survival, overall survival

Timeline

Start

2011-02-01

Primary completion

2013-02

Completion

2013-02-26

Publications

• Results Chaise C, Buchan SL, Rice J, Marquet J, Rouard H, Kuentz M, Vittes GE, Molinier-Frenkel V, Farcet JP, Stauss HJ, Delfau-Larue MH, Stevenson FK. DNA vaccination induces WT1-specific T-cell responses with potential clinical relevance. Blood. 2008 Oct 1;112(7):2956-64. doi: 10.1182/blood-2008-02-137695. Epub 2008 May 23.
• Results Rice J, Ottensmeier CH, Stevenson FK. DNA vaccines: precision tools for activating effective immunity against cancer. Nat Rev Cancer. 2008 Feb;8(2):108-20. doi: 10.1038/nrc2326.

Drugs

Indications