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022 _a Online ISSN 1557-3265
022 _aPrint ISSN 1078-0432
028 _b Phone: +255 28 298 3384
028 _b Fax: +255 28 298 3386
028 _b Email: vc@bugando.ac.tz
035 _a Website: www.bugando.ac.tz
040 _cDLC
041 _aEnglish
245 _aHomologous Recombination DNA Repair Pathway Disruption and Retinoblastoma Protein Loss Are Associated with Exceptional Survival in High-Grade Serous Ovarian Cancer
260 _aMwanza, Tanzania:
_b American Association for Cancer Research &
_b Catholic University of Health and Allied Sciences [CUHAS – Bugando]
_c2018/2/1
300 _aPages 569-580
490 _vClinical Cancer Research Volume 24 Issue 3
520 _aAbstract Purpose: Women with epithelial ovarian cancer generally have a poor prognosis; however, a subset of patients has an unexpected dramatic and durable response to treatment. We sought to identify clinical, pathological, and molecular determinants of exceptional survival in women with high-grade serous cancer (HGSC), a disease associated with the majority of ovarian cancer deaths. Experimental Design: We evaluated the histories of 2,283 ovarian cancer patients and, after applying stringent clinical and pathological selection criteria, identified 96 with HGSC that represented significant outliers in terms of treatment response and overall survival. Patient samples were characterized immunohistochemically and by genome sequencing. Results: Different patterns of clinical response were seen: long progression-free survival (Long-PFS), multiple objective responses to chemotherapy (Multiple Responder), and/or greater than 10-year overall survival (Long-Term Survivors). Pathogenic germline and somatic mutations in genes involved in homologous recombination (HR) repair were enriched in all three groups relative to a population-based series. However, 29% of 10-year survivors lacked an identifiable HR pathway alteration, and tumors from these patients had increased Ki-67 staining. CD8+ tumor-infiltrating lymphocytes were more commonly present in Long-Term Survivors. RB1 loss was associated with long progression-free and overall survival. HR deficiency and RB1 loss were correlated, and co-occurrence was significantly associated with prolonged survival. Conclusions: There was diversity in the clinical trajectory of exceptional survivors associated with multiple molecular determinants of exceptional outcome in HGSC patients. Concurrent HR deficiency and RB1 loss were associated with favorable outcomes, suggesting that co-occurrence of specific mutations might mediate durable responses in such patients. Clin Cancer Res; 24(3); 569–80. ©2017 AACR.
700 _a Nadia Traficante
_944533
700 _aAnna deFazio
_944469
700 _a David DL Bowtell
_944534
700 _a Brad H Nelson
_944535
700 _aPaul Harnett
_944536
700 _a Martin Köbel
_944499
700 _a Alexander Dobrovic
_944537
700 _aAlison Brand
_944538
700 _a Michael Friedlander
_944539
700 _a Penny Blomfield
_944540
700 _a Philip Beale
_944541
700 _aRobert M Rome
_944542
700 _a Yee C Leung
_944543
700 _aPaul A Cohen
_944544
700 _a Marisa Grossi
_944545
700 _a Sumitra Ananda
_944546
700 _aAnne Hamilton
_944547
700 _a Linda Mileshkin
_944548
700 _a Orla McNally
_944549
700 _aPeter F Rambau
_922887
700 _a Prue E Allan
_944550
700 _aRaghwa Sharma
_944414
700 _aColin JR Stewart
_944551
700 _aJillian Hung
_944430
700 _a Nicola Waddell
_944552
700 _aJohn V Pearson
_944553
700 _a Sean M Grimmond
_944554
700 _aKaushalya Amarasinghe
_944555
700 _aGiada V Zapparoli
_944556
700 _aThomas Mikeska
_944557
700 _a Joy Hendley
_944558
700 _a Yoke-Eng Chiew
_944559
700 _a Sreeja R Gadipally
_944560
700 _a Timothy Semple
_944561
700 _a Gisela Mir Arnau
_944562
700 _aJason Li
_944563
700 _aAnn-Marie Patch
_944564
700 _a Joshy George
_944565
700 _a Katy Milne
_944566
700 _aMaartje CA Wouters
_944567
700 _aElizabeth L Christie
_944568
700 _a Valérie Garès
_944569
700 _a Val Gebski
_944570
700 _aBo Gao
_914627
700 _a Dariush Etemadmoghadam
_944571
700 _aCatherine J Kennedy
_944445
700 _aCatherine Emmanuel
_944572
700 _a Sian Fereday
_944573
700 _aKathryn Alsop
_944574
700 _aDale W Garsed
_944575
710 _aAustralian Ovarian Cancer Study Group
_944576
942 _2ddc
_cVM
999 _c19128
_d19128