Cancers (Sep 2023)

Outcome of Second Primary Malignancies Developing in Multiple Myeloma Patients

  • Irit Avivi,
  • David H. Vesole,
  • Julio Davila-Valls,
  • Lidia Usnarska-Zubkiewicz,
  • Magdalena Olszewska-Szopa,
  • Vibor Milunovic,
  • Bartłomiej Baumert,
  • Bogumiła Osękowska,
  • Anna Kopińska,
  • Massimo Gentile,
  • Borja Puertas-Martinez,
  • Paweł Robak,
  • Edvan Crusoe,
  • Luis Gerardo Rodriguez-Lobato,
  • Małgorzata Gajewska,
  • Gergely Varga,
  • Michel Delforge,
  • Yael Cohen,
  • Alessandro Gozzetti,
  • Camila Pena,
  • Chaim Shustik,
  • Gabor Mikala,
  • Klara Zalac,
  • H. Denis Alexander,
  • Peter Barth,
  • Katja Weisel,
  • Joaquín Martínez-López,
  • Anna Waszczuk-Gajda,
  • Mateusz Krzystański,
  • Artur Jurczyszyn

DOI
https://doi.org/10.3390/cancers15174359
Journal volume & issue
Vol. 15, no. 17
p. 4359

Abstract

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Background: There is an increased risk of second primary malignancies (SMPs) in patients with multiple myeloma (MM). This multinational ‘real-world’ retrospective study analyzed the characteristics and outcomes of MM patients that developed SPMs. Results: 165 patients were analyzed: 62.4% males; 8.5% with a prior cancer; 113 with solid SPMs, mainly ≥stage 2; and 52 with hematological SPM (hemato-SPM), mainly MDS/AML. Patients with hemato-SPM were younger (p = 0.05) and more frequently had a prior AutoHCT (p = 0.012). The time to SPM was shorter in the older (>65 years) and more heavily pretreated patients. One hundred patients were actively treated at the time of SPM detection. Treatment was discontinued in 52, substituted with another anti-MM therapy in 15, and continued in 33 patients. Treatment discontinuation was predominant in the patients diagnosed with hemato-SPM (76%). The median OS following SPM detection was 8.5 months, and the main cause of death was SPM. A poor ECOG status predicted a shorter OS (PS 3 vs. 0, HR = 5.74, 2.32–14.21, p p = 0.037) predicted longer OS. Conclusions: With the continuing improvement in OS, a higher proportion of MM patients might develop SPM. The OS following SPM diagnosis is poor; hence, frequent surveillance and early detection are imperative to improve outcomes.

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