Abstract:
BACKGROUND:Patients with hereditary leiomyomatosis and renal cell carcinoma (HLRCC) resulting from fumarate hydratase (FH) mutations may present with skin, uterine, and renal tumors, with each having unique pathologic features. This study investigated the association between prospectively identified suspicious pathology (SP) and FH mutations when patients were referred for genetic testing. METHODS:This was an institutional review board-approved cohort study of patients receiving FH testing from 2008 to 2013. SP was defined as a report of HLRCC histologic features identified during a prospective pathologic assessment. The association between SP and FH mutations was analyzed. RESULTS:FH testing was performed in 29 patients with a median age of 37 years; 15 (52%) were female, and 18 (62%) were white. Pathologists reported SP from kidney tumors (11 of 18), leiomyomas (9 of 15: uterus [n = 8] and bladder [n = 1]), and metastatic tumors (3 of 6) in 23 of 39 associated specimens (59%) from 21 of the 29 patients (72%). Patients with SP were younger (35 vs 51 years; P = .010), and those with kidney tumors more often had stage pT3 or higher renal cell carcinoma than those without SP (100% vs 33%; P = .006). FH mutations were present in 8 patients with SP (38%) and in 1 patient without SP (13%; P = .37); 7 of these patients had kidney cancer (n for SP = 7), all with N1 disease. Analyzing SP by tissue type identified only SP from renal tumors as being significantly associated with positive testing for an FH mutation (P = .013). CONCLUSIONS:SP from kidney tumors was statistically associated with FH mutations. An expert pathologic assessment of renal tumors will facilitate the clinical identification of HLRCC cases, and this will result in genetic testing and targeted cancer screening for patients and at-risk family members. Cancer 2017;123:2452-58. © 2017 American Cancer Society.
journal_name
Cancerjournal_title
Cancerauthors
Kopp RP,Stratton KL,Glogowski E,Schrader KA,Rau-Murthy R,Russo P,Coleman JA,Offit Kdoi
10.1002/cncr.30605subject
Has Abstractpub_date
2017-07-01 00:00:00pages
2452-2458issue
13eissn
0008-543Xissn
1097-0142journal_volume
123pub_type
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