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Characterization of the Cancer Spectrum in Men With Germline Brca1 and Brca2 Pathogenic Variants: Results From the Consortium of Investigators of Modifiers of Brca1/2 (Cimba) Publisher Pubmed



Silvestri V1 ; Leslie G2 ; Barnes DR2 ; Agnarsson BA3, 4 ; Aittomaki K5 ; Alducci E6 ; Andrulis IL7, 8 ; Barkardottir RB3, 9 ; Barroso A10 ; Barrowdale D2 ; Benitez J11, 12 ; Bonanni B13 ; Borg A14 ; Buys SS15 Show All Authors
Authors
  1. Silvestri V1
  2. Leslie G2
  3. Barnes DR2
  4. Agnarsson BA3, 4
  5. Aittomaki K5
  6. Alducci E6
  7. Andrulis IL7, 8
  8. Barkardottir RB3, 9
  9. Barroso A10
  10. Barrowdale D2
  11. Benitez J11, 12
  12. Bonanni B13
  13. Borg A14
  14. Buys SS15
  15. Caldes T16
  16. Caligo MA17
  17. Capalbo C1
  18. Campbell I18
  19. Chung WK19
  20. Claes KBM20
  21. Colonna SV15
  22. Cortesi L21
  23. Couch FJ22
  24. De La Hoya M16
  25. Diez O23, 24
  26. Ding YC25
  27. Domchek S26
  28. Easton DF2, 27
  29. Ejlertsen B28
  30. Engel C29
  31. Evans DG30
  32. Feliubadalo L31
  33. Foretova L32
  34. Fostira F33
  35. Geczi L34
  36. Gerdes AM35
  37. Glendon G7
  38. Godwin AK36
  39. Goldgar DE37
  40. Hahnen E38, 39
  41. Hogervorst FBL40
  42. Hopper JL41
  43. Hulick PJ42, 43
  44. Isaacs C44
  45. Izquierdo A45
  46. James PA18, 46
  47. Janavicius R47
  48. Jensen UB48
  49. John EM49
  50. Joseph V50
  51. Konstantopoulou I33
  52. Kurian AW49
  53. Kwong A51, 52, 53
  54. Landucci E54
  55. Lesueur F55, 56, 57
  56. Loud JT58
  57. Machackova E32
  58. Mai PL59
  59. Majidzadeha K60
  60. Manoukian S61
  61. Montagna M6
  62. Moserle L6
  63. Mulligan AM62, 63
  64. Nathanson KL26
  65. Nevanlinna H64
  66. Ngeow Yuen Ye J65, 66
  67. Nikitinazake L67
  68. Offit K50, 68
  69. Olah E69
  70. Olopade OI70
  71. Osorio A10, 12
  72. Papi L71
  73. Park SK72, 73, 74
  74. Pedersen IS75
  75. Perezsegura P16
  76. Petersen AH76
  77. Pinto P77
  78. Porfirio B71
  79. Pujana MA78
  80. Radice P79
  81. Rantala J80
  82. Rashid MU81, 82
  83. Rosenzweig B83, 84
  84. Rossing M85
  85. Santamarina M86, 87, 88
  86. Schmutzler RK38, 39
  87. Senter L89
  88. Simard J90
  89. Singer CF91
  90. Solano AR92
  91. Southey MC93, 94, 95
  92. Steele L25
  93. Steinsnyder Z50
  94. Stoppalyonnet D96, 97, 98
  95. Tan YY99
  96. Teixeira MR77, 100
  97. Teo SH101, 102
  98. Terry MB103
  99. Thomassen M104
  100. Toland AE105
  101. Torresesquius S23
  102. Tung N106
  103. Van Asperen CJ107
  104. Vega A86, 87, 88
  105. Viel A108
  106. Vierstraete J20
  107. Wappenschmidt B38, 39
  108. Weitzel JN109
  109. Wieme G20
  110. Yoon SY101
  111. Zorn KK59
  112. Mcguffog L2
  113. Parsons MT110
  114. Hamann U81
  115. Greene MH58
  116. Kirk JA111
  117. Neuhausen SL25
  118. Rebbeck TR112, 113
  119. Tischkowitz M114, 115
  120. Chenevixtrench G110
  121. Antoniou AC2
  122. Friedman E84, 116
  123. Ottini L1

Source: JAMA Oncology Published:2020


Abstract

Importance: The limited data on cancer phenotypes in men with germline BRCA1 and BRCA2 pathogenic variants (PVs) have hampered the development of evidence-based recommendations for early cancer detection and risk reduction in this population. Objective: To compare the cancer spectrum and frequencies between male BRCA1 and BRCA2 PV carriers. Design, Setting, and Participants: Retrospective cohort study of 6902 men, including 3651 BRCA1 and 3251 BRCA2 PV carriers, older than 18 years recruited from cancer genetics clinics from 1966 to 2017 by 53 study groups in 33 countries worldwide collaborating through the Consortium of Investigators of Modifiers of BRCA1/2 (CIMBA). Clinical data and pathologic characteristics were collected. Main Outcomes and Measures: BRCA1/2 status was the outcome in a logistic regression, and cancer diagnoses were the independent predictors. All odds ratios (ORs) were adjusted for age, country of origin, and calendar year of the first interview. Results: Among the 6902 men in the study (median [range] age, 51.6 [18-100] years), 1634 cancers were diagnosed in 1376 men (19.9%), the majority (922 of 1,376 [67%]) being BRCA2 PV carriers. Being affected by any cancer was associated with a higher probability of being a BRCA2, rather than a BRCA1, PV carrier (OR, 3.23; 95% CI, 2.81-3.70; P <.001), as well as developing 2 (OR, 7.97; 95% CI, 5.47-11.60; P <.001) and 3 (OR, 19.60; 95% CI, 4.64-82.89; P <.001) primary tumors. A higher frequency of breast (OR, 5.47; 95% CI, 4.06-7.37; P <.001) and prostate (OR, 1.39; 95% CI, 1.09-1.78; P =.008) cancers was associated with a higher probability of being a BRCA2 PV carrier. Among cancers other than breast and prostate, pancreatic cancer was associated with a higher probability (OR, 3.00; 95% CI, 1.55-5.81; P =.001) and colorectal cancer with a lower probability (OR, 0.47; 95% CI, 0.29-0.78; P =.003) of being a BRCA2 PV carrier. Conclusions and Relevance: Significant differences in the cancer spectrum were observed in male BRCA2, compared with BRCA1, PV carriers. These data may inform future recommendations for surveillance of BRCA1/2-associated cancers and guide future prospective studies for estimating cancer risks in men with BRCA1/2 PVs. © 2020 American Medical Association. All rights reserved.
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