Molecular Therapy: Methods & Clinical Development (Jun 2019)

Safety of CD34+ Hematopoietic Stem Cells and CD4+ T Lymphocytes Transduced with LVsh5/C46 in HIV-1 Infected Patients with High-Risk Lymphoma

  • Marianne Delville,
  • Fabien Touzot,
  • Chloé Couzin,
  • Isabelle Hmitou,
  • Lounes Djerroudi,
  • Amani Ouedrani,
  • François Lefrère,
  • Caroline Tuchman-Durand,
  • Chloé Mollet,
  • Jean-Roch Fabreguettes,
  • Nicolas Ferry,
  • Laurent Laganier,
  • Alessandra Magnani,
  • Elisa Magrin,
  • Valérie Jolaine,
  • Asier Saez-Cirion,
  • Orit Wolstein,
  • Geoffrey Symonds,
  • Pierre Frange,
  • Hélène Moins-Teisserenc,
  • Marie-Laure Chaix-Baudier,
  • Antoine Toubert,
  • Jérôme Larghero,
  • Nathalie Parquet,
  • Anne C. Brignier,
  • Françoise Barré-Sinoussi,
  • Eric Oksenhendler,
  • Marina Cavazzana

Journal volume & issue
Vol. 13
pp. 303 – 309

Abstract

Read online

Although the risk of developing lymphoma has decreased in the highly active antiretroviral therapy era, this cancer remains the major cause of mortality in HIV-infected patients. Autologous hematopoietic stem cell transplantation (ASCT) outcome does not differ for HIV-infected versus HIV-uninfected patients. We propose to develop a new treatment for HIV-associated high-risk lymphoma based on autologous transplantation of two genetically modified products: CD4+ T lymphocytes and CD34+ hematopoietic stem cells (HSPCs). The cells will be transduced ex vivo with the Cal-1 lentiviral vector encoding for both a short hairpin RNA (shRNA) against CCR5 (sh5) and the HIV-1 fusion inhibitor C46. The transduced cells will be resistant to HIV infection by two complementary mechanisms: impaired binding of the virus to the cellular CCR5 co-receptor and decreased fusion of the virus as C46 interacts with gp41 and inhibits HIV infection. This phase I/II pilot study, also entitled GENHIV, will involve two French participating centers: Saint Louis Hospital and Necker Hospital in Paris. We plan to enroll five HIV-1-infected patients presenting with high-risk lymphoma and require a treatment with ASCT. The primary objective of this study is to evaluate the safety, feasibility, and success of engraftment of Cal-1 gene-transduced CD4+ T lymphocytes and CD34+ HSPCs.