Impact of cytogenetic classification on outcomes following early high-dose therapy in multiple myeloma

Leukemia. 2016 Mar;30(3):633-9. doi: 10.1038/leu.2015.287. Epub 2015 Oct 21.

Abstract

Early high-dose therapy (HDT), consisting of high-dose melphalan and autologous stem cell transplantation following doublet or triplet novel agent induction, is a preferred management strategy for transplant-eligible myeloma patients. We set out to examine the utility of the current fluorescence in situ hybridization (FISH)-based risk stratification in a homogenously treated population of transplant-eligible myeloma patients receiving novel induction regimens and early HDT with or without posttransplant maintenance therapy. FISH was available in 409 patients at the time of diagnosis for patients receiving HDT within 12 months of diagnosis. We present comprehensive outcomes for chromosome 14 translocations and 17p abnormalities that both support and refute current risk stratification models. In contrast to its current classification as a marker of 'standard risk' (SR), t(11;14) was associated with inferior overall survival (OS) when compared with the classical SR cohort. The use of novel agent maintenance therapy (bortezomib or lenalidomide) following early HDT ameliorates the negative prognostic value of high-risk (HR) cytogenetic markers. HR patients who received maintenance following early HDT had similar OS compared with the SR cohort at 5 years.

MeSH terms

  • Adult
  • Aged
  • Antineoplastic Combined Chemotherapy Protocols / therapeutic use*
  • Bortezomib / therapeutic use
  • Chromosomes, Human, Pair 11
  • Chromosomes, Human, Pair 14
  • Chromosomes, Human, Pair 17
  • Cytogenetic Analysis
  • Dexamethasone / therapeutic use
  • Hematopoietic Stem Cell Transplantation*
  • Humans
  • In Situ Hybridization, Fluorescence
  • Induction Chemotherapy / methods
  • Lenalidomide
  • Male
  • Melphalan / therapeutic use
  • Middle Aged
  • Multiple Myeloma / diagnosis*
  • Multiple Myeloma / genetics
  • Multiple Myeloma / mortality
  • Multiple Myeloma / therapy*
  • Prognosis
  • Remission Induction
  • Retrospective Studies
  • Survival Analysis
  • Thalidomide / analogs & derivatives
  • Thalidomide / therapeutic use
  • Translocation, Genetic
  • Transplantation, Autologous
  • Treatment Outcome

Substances

  • Thalidomide
  • Bortezomib
  • Dexamethasone
  • Lenalidomide
  • Melphalan