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Most cancer tissues showed moderate cytoplasmic positivity. Renal cancers were in general weakly stained. Tumors of the liver showed weak staining in cholangiocarcinomas while hepatocellular tumors stained moderately.
A majority of cancer tissues were negative. A few cases of for example colorectal, endometrial, breast and ovarian cancers showed weak cytoplasmic staining.
GENE INFORMATION
Gene name
OTOF (HGNC Symbol)
Synonyms
DFNB6, DFNB9, FER1L2
Description
Otoferlin (HGNC Symbol)
Entrez gene summary
Mutations in this gene are a cause of neurosensory nonsyndromic recessive deafness, DFNB9. The short form of the encoded protein has 3 C2 domains, a single carboxy-terminal transmembrane domain found also in the C. elegans spermatogenesis factor FER-1 and human dysferlin, while the long form has 6 C2 domains. The homology suggests that this protein may be involved in vesicle membrane fusion. Several transcript variants encoding multiple isoforms have been found for this gene. [provided by RefSeq, Jul 2008]