GermlineCNVCaller is a bioinformatics tool designed to identify germline copy number variations (CNVs) from next-generation sequencing (NGS) data. CNVs are segments of the genome that are duplicated or deleted and can have significant implications for genetic diseases, including cancer. By focusing on germline variations, GermlineCNVCaller helps in identifying inherited genetic alterations that may predispose individuals to certain types of cancer.