VTD combination therapy with bortezomib-thalidomide-dexamethasone is highly effective in advanced and refractory multiple myeloma

Leukemia. 2008 Jul;22(7):1419-27. doi: 10.1038/leu.2008.99. Epub 2008 Apr 24.

Abstract

Bortezomib (V) was combined with thalidomide (T) and dexamethasone (D) in a phase I/II trial to determine dose-limiting toxicities (DLT's) and clinical activity of the VTD regimen in 85 patients with advanced and refractory myeloma. The starting dose of V was 1.0 mg/m(2) (days 1, 4, 8, 11, every 21 day) with T added from cycle 2 at 50 mg/day, with 50 mg increments per 10 patient cohorts, to a maximum dose of 200 mg. In the absence of DLT's, the same reiteration of T dose increases was applied with a higher dose of V=1.3 mg/m(2). D was added with cycle 4 in the absence of partial response (PR). Ninety-two percent had prior autotransplants, 74% had prior T and 76% abnormal cytogenetics. MTD was reached at V=1.3 mg/m(2) and T=150 mg. Minor response (MR) was recorded in 79%, and 63% achieved PR including 22% who qualified for near-complete remission. At 4 years, 6% remain event-free and 23% alive. Both OS and EFS were significantly longer in the absence of prior T exposure and when at least MR status was attained. The MMSET/FGFR3 molecular subtype was prognostically favorable, a finding since reported for a VTD-incorporating tandem transplant trial (Total Therapy 3) for untreated patients with myeloma (BJH 2008).

Publication types

  • Clinical Trial, Phase I
  • Clinical Trial, Phase II
  • Research Support, N.I.H., Extramural

MeSH terms

  • Aged
  • Antineoplastic Combined Chemotherapy Protocols / therapeutic use*
  • Boronic Acids / administration & dosage
  • Boronic Acids / adverse effects
  • Bortezomib
  • Dexamethasone / administration & dosage
  • Dexamethasone / adverse effects
  • Female
  • Humans
  • Male
  • Middle Aged
  • Multiple Myeloma / drug therapy*
  • Multiple Myeloma / mortality
  • Pyrazines / administration & dosage
  • Pyrazines / adverse effects
  • Thalidomide / administration & dosage
  • Thalidomide / adverse effects

Substances

  • Boronic Acids
  • Pyrazines
  • Thalidomide
  • Bortezomib
  • Dexamethasone