G protein-coupled receptor 128 is a protein encoded by the ADGRG7gene. GPR128 is a member of the adhesion GPCR family. Adhesion GPCRs are characterized by an extended extracellular region often possessing N-terminal protein modules that is linked to a TM7 region via a domain known as the GPCR-Autoproteolysis INducing (GAIN) domain.
GPR128 is specifically expressed in human liver as well as in mouse bone marrow and intestinal tissues.
A 111-kb copy number gain with breakpoints within the TRK-fused gene (a target of translocations in lymphoma and thyroid tumors) and GPR128 has been identified in the genome of patients with atypical myeloproliferative neoplasms. Notably, the fused gene was also detected in few healthy individuals.
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^Chase A, Ernst T, Fiebig A, Collins A, Grand F, Erben P, Reiter A, Schreiber S, Cross NC (Jan 2010). "TFG, a target of chromosome translocations in lymphoma and soft tissue tumors, fuses to GPR128 in healthy individuals". Haematologica. 95 (1): 20–6. doi:10.3324/haematol.2009.011536. PMID19797732.