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HPV nonrelated endocervical adenocarcinoma in hereditary cancer syndromes

Introduction: The relationship between endocervical cancer and cancer susceptibility syndromes is not yet fully understood. We present 2 cases of endocervical cancer: 1 arising in a patient carrier with a pathogenic BRCA1 variant and the second detected in a Lynch syndrome family carrying the MSH2 germline pathogenic variant. Case description: Somatic analyses including loss of heterozygosity and fluorescent in situ hybridization demonstrated that the second hit in patient 1 is BRCA1-related. Mismatch repair somatic analyses in the second family demonstrated that the endocervical cancers of patient 2 and of her sister are MSH2-related. These data confirm the relationship between the pathogenesis of endocervical cancer and the presence of germline BRCA1 and MSH2 mutations. Conclusions: Our study confirms that gynecologic cancers including rare entities such as non–human papillomavirus–related endocervical cancer (NHPVA) are sentinels for inherited cancer syndromes. Endocervical cancer NHPVAs might be considered for cancer genetic counseling in order to improve cancer prevention. For this reason, the role of pathologists is particularly important for the correct identification of the cervical tumor site.