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National Study Links Agent Orange to Earlier, Higher-Risk MDS

A new Blood analysis draws on 2,115 cases to connect Vietnam-era exposure to earlier-onset, higher-risk MDS.

Overview

  • Researchers presented the findings at the ASH meeting and published them in Blood, marking the first nationwide prospective analysis to tie Agent Orange to MDS severity.
  • The team examined participants in the federally funded MDS Natural History Study, including 2,115 patients overall and 130 who self-reported exposure.
  • Exposed patients were diagnosed at younger ages and showed a higher burden of harmful mutations with genetic patterns associated with toxin-related MDS.
  • Those with reported exposure were nearly twice as likely to see disease progression within two years, while overall survival was similar between groups.
  • The results point to potential gains in veteran screening and benefits decisions, with planned validation using national veteran databases and a noted disproportionate exposure reported by Black veterans.