TY - JOUR
T1 - Germline Pathogenic Variants and Genetic Counseling by Ancestry in Patients With Epithelial Ovarian Cancer
AU - Sia, Tiffany Y
AU - Maio, Anna
AU - Kemel, Yelena M
AU - Arora, Kanika S
AU - Gordhandas, Sushmita B
AU - Kahn, Ryan M
AU - Salo-Mullen, Erin E
AU - Sheehan, Margaret A
AU - Tejada, Prince Rainier
AU - Bandlamudi, Chaitanya
AU - Zhou, Qin
AU - Iasonos, Alexia
AU - Grisham, Rachel N
AU - O'Cearbhaill, Roisin E
AU - Tew, William P
AU - Long Roche, Kara
AU - Zivanovic, Oliver
AU - Sonoda, Yukio
AU - Gardner, Ginger J
AU - Chi, Dennis S
AU - Latham, Alicia J
AU - Carlo, Maria I
AU - Murciano-Goroff, Yonina R
AU - Will, Marie
AU - Walsh, Michael F
AU - Robson, Mark E
AU - Mandelker, Diana L
AU - Berger, Michael F
AU - Abu-Rustum, Nadeem R
AU - Brown, Carol L
AU - Offit, Kenneth
AU - Hamilton, Jada G
AU - Aghajanian, Carol
AU - Weigelt, Britta
AU - Stadler, Zsofia K
AU - Liu, Ying L
PY - 2023/9
Y1 - 2023/9
N2 - PURPOSE: To evaluate rates of germline pathogenic/likely pathogenic variants (PVs) and genetic counseling by ancestry in patients with epithelial ovarian cancer (EOC).METHODS: Patients with pathologically confirmed EOC who underwent clinical tumor-normal sequencing from January 1, 2015, to December 31, 2020, inclusive of germline analysis of ≥76 genes were included. Patients with newly identified PVs were referred for Clinical Genetics Service (CGS) counseling. Ancestry groups were defined using self-reported race/ethnicity and Ashkenazi Jewish (AJ) heritage. Genetic ancestry was inferred computationally using validated algorithms. Logistic regression models were built.RESULTS: Of 1,266 patients, self-reported ancestry (AJ, 17%; Asian, 10%; Black/African American, 5.4%; Hispanic, 6.2%; non-Hispanic White, 57%; other, 0.16%; unknown, 4.0%) correlated with genetic ancestry (AJ ancestry, 18%; admixed, 10%; African, 4%; East Asian [EAS], 6%; European, 56%; Native American, 0.2%; South Asian [SAS], 4%; unknown, 2%). Germline PVs were observed in 313 (25%) patients, including 195 (15%) with PVs in EOC-associated genes. Those with PVs were younger at diagnosis (59 v 62 years; P < .001) and more likely to have high-grade serous ovarian cancer (83% v 72%; P = .009). PV prevalence varied between ancestry groups (P < .001), with highest rates in the AJ (39.9%) and Asian (26.5%) groups and similar rates (>10%) across other ancestry groups. Use of genetic ancestry demonstrated similar findings and further characterized high rates of PV in EAS/SAS groups. Younger age, high-grade serous histology, and self-reported AJ or Asian ancestry were associated with PV in an EOC-associated gene. Rates of CGS counseling for newly identified PVs were high (80%) across ancestry groups.CONCLUSION: Rates of PV, particularly in EOC-associated genes, were high regardless of ancestry, with similar rates of counseling between groups, emphasizing the importance of universal genetic testing in all patients with EOC.
AB - PURPOSE: To evaluate rates of germline pathogenic/likely pathogenic variants (PVs) and genetic counseling by ancestry in patients with epithelial ovarian cancer (EOC).METHODS: Patients with pathologically confirmed EOC who underwent clinical tumor-normal sequencing from January 1, 2015, to December 31, 2020, inclusive of germline analysis of ≥76 genes were included. Patients with newly identified PVs were referred for Clinical Genetics Service (CGS) counseling. Ancestry groups were defined using self-reported race/ethnicity and Ashkenazi Jewish (AJ) heritage. Genetic ancestry was inferred computationally using validated algorithms. Logistic regression models were built.RESULTS: Of 1,266 patients, self-reported ancestry (AJ, 17%; Asian, 10%; Black/African American, 5.4%; Hispanic, 6.2%; non-Hispanic White, 57%; other, 0.16%; unknown, 4.0%) correlated with genetic ancestry (AJ ancestry, 18%; admixed, 10%; African, 4%; East Asian [EAS], 6%; European, 56%; Native American, 0.2%; South Asian [SAS], 4%; unknown, 2%). Germline PVs were observed in 313 (25%) patients, including 195 (15%) with PVs in EOC-associated genes. Those with PVs were younger at diagnosis (59 v 62 years; P < .001) and more likely to have high-grade serous ovarian cancer (83% v 72%; P = .009). PV prevalence varied between ancestry groups (P < .001), with highest rates in the AJ (39.9%) and Asian (26.5%) groups and similar rates (>10%) across other ancestry groups. Use of genetic ancestry demonstrated similar findings and further characterized high rates of PV in EAS/SAS groups. Younger age, high-grade serous histology, and self-reported AJ or Asian ancestry were associated with PV in an EOC-associated gene. Rates of CGS counseling for newly identified PVs were high (80%) across ancestry groups.CONCLUSION: Rates of PV, particularly in EOC-associated genes, were high regardless of ancestry, with similar rates of counseling between groups, emphasizing the importance of universal genetic testing in all patients with EOC.
KW - Female
KW - Humans
KW - Genetic Counseling
KW - Carcinoma, Ovarian Epithelial/genetics
KW - Genetic Testing
KW - Germ Cells
KW - Ovarian Neoplasms/genetics
U2 - 10.1200/PO.23.00137
DO - 10.1200/PO.23.00137
M3 - Article
C2 - 37738546
SN - 2473-4284
VL - 7
SP - e2300137
JO - JCO precision oncology
JF - JCO precision oncology
ER -