OncoSignal
Live from Open Targets Platform, fetched 2026-11-12 01:53 UTC. Every row links to its source record.

SMAD3 SMAD family member 3

ENSG00000166949 · protein coding · Open Targets profile

Receptor-regulated SMAD (R-SMAD) that is an intracellular signal transducer and transcriptional modulator activated by TGF-beta (transforming growth factor) and activin type 1 receptor kinases. Binds the TRE element in the promoter region of many genes that are regulated by TGF-beta and, on formation of the SMAD3/SMAD4 complex, activates transcription. Also can form a SMAD3/SMAD4/JUN/FOS complex at the AP- 1/SMAD site to regulate TGF-beta-mediated transcription. Has an inhibitory effect on wound healing probably by modulating both growth and migration of primary keratinocytes and by altering the TGF-mediated chemotaxis of monocytes. This effect on wound healing appears to be hormone-sensitive. Regulator of chondrogenesis and osteogenesis and inhibits early healing of bone fractures. Positively regulates PDPK1 kinase activity by stimulating its dissociation from the 14-3-3 protein YWHAQ which acts as a negative regulator. {ECO:0000269|PubMed:10995748, ECO:0000269|PubMed:15241418, ECO:0000269|PubMed:15588252, ECO:0000269|PubMed:16156666, ECO:0000269|PubMed:16751101, ECO:0000269|PubMed:16862174, ECO:0000269|PubMed:17327236, ECO:0000269|PubMed:19218245, ECO:0000269|PubMed:19289081, ECO:0000269|PubMed:9732876, ECO:0000269|PubMed:9892009}.

In 9 of 15 cancers, the evidence for SMAD3 comes mainly from mutations found in tumours

Each row is a cancer, strongest overall evidence first. The two dots show how strong the inherited (germline) and tumour-mutation (somatic) evidence is; the line between them is the gap.

Inherited (germline) variantsMutations in tumours (somatic)
00.250.50.751thyroid gland carcinomathyroid gland carcinomathyroid gland carcinoma: somatic 0.46thyroid gland carcinoma: germline 0.78thyroid cancerthyroid cancerthyroid cancer: germline 0.75colorectal adenocarcinomacolorectal adenocarcinomacolorectal adenocarcinoma: somatic 0.58breast cancerbreast cancerbreast cancer: germline 0.66thyroid gland papillary carcinomathyroid gland papillary carcinomathyroid gland papillary carcinoma: somatic 0.46thyroid gland papillary carcinoma: germline 0.55pancreatic ductal adenocarcinomapancreatic ductal adenocarcinomapancreatic ductal adenocarcinoma: somatic 0.61colorectal cancercolorectal cancercolorectal cancer: germline 0.55thyroid tumorthyroid tumorthyroid tumor: somatic 0.30thyroid tumor: germline 0.55esophageal adenocarcinomaesophageal adenocarcinomaesophageal adenocarcinoma: somatic 0.61kidney neoplasmkidney neoplasmkidney neoplasm: somatic 0.61colon adenocarcinomacolon adenocarcinomacolon adenocarcinoma: somatic 0.61endometrial endometrioid adenocarcinomaendometrial endometrioid adenocarcinomaendometrial endometrioid adenocarcinoma: somatic 0.61lymphoid neoplasmlymphoid neoplasmlymphoid neoplasm: somatic 0.61carcinoma of liver and intrahepatic bil…carcinoma of liver and intrahepatic biliary tractcarcinoma of liver and intrahepatic biliary tract: somatic 0.61superficial spreading melanomasuperficial spreading melanomasuperficial spreading melanoma: somatic 0.61

Scores run from 0 (no evidence) to 1 (strongest). A missing dot at 0 means Open Targets holds no evidence of that kind. Source: Open Targets Platform, fetched live.

Tractability

Small molecule
High-Quality Ligand, Med-Quality Pocket, Druggable Family
Antibody
GO CC med conf
PROTAC
Literature, UniProt Ubiquitination, Database Ubiquitination, Half-life Data, Small Molecule Binder

gnomAD loss of function constraint: o/e 0.23165999352931976 (upper bound 0.3753400146961212). Low values mean loss of function is poorly tolerated, a safety flag for inhibition.

Who runs trials of these drugs

No named investigators on registry trials of SMAD3's approved or late-stage drugs in the last three years.

No terminated, withdrawn or suspended trials of SMAD3's drugs are registered

All 0 drugs and clinical candidates as a table

Each drug, stage and indication links to its Open Targets record, where the trials and approvals behind it are listed. Salt forms (for example a mesylate) are listed as Open Targets records them, as separate entries.

DrugTypeHighest stageIndicationsSource records
No drugs or clinical candidates recorded.