Upon observing a potential link between peptides that recognize cancer neoantigens in ascites and better prognosis, we examined the mutation status of 3 genes that are frequently altered in ovarian tumors: two homologous recombination repair genes (BRCA1 and BRCA2) and the transcription factor TP53 (S1 Table). The gene discussed is BRCA1; the disease is ovarian neoplasm.