DNAJB1 and fibrolamellar hepatocellular carcinoma: In fibrolamellar hepatocellular carcinoma (FL-HCC), which is a rare liver tumor, a ~400-kilobase deletion on chromosome 19 leads to a chimeric gene product consisting of exon 1, also including parts of exon 2, of DNAJB1 fused with exon 2–10 of PRKACA (DNAJB1-PRKACA) (206, 207).