SDC4 syndecan 4
ENSG00000124145 · protein coding · Open Targets profile
Cell surface proteoglycan which regulates exosome biogenesis in concert with SDCBP and PDCD6IP (PubMed:22660413). .
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.
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
- Approved Drug
- Antibody
- UniProt loc high conf, GO CC high conf, UniProt loc med conf, UniProt SigP or TMHMM, Human Protein Atlas loc
- PROTAC
- Database Ubiquitination, Half-life Data
gnomAD loss of function constraint: o/e 0.8301699757575989 (upper bound 1.2452000379562378). Low values mean loss of function is poorly tolerated, a safety flag for inhibition.
Who runs trials of these drugs
Principal investigators and study chairs on 13 registry trials, updated in the last three years, of the most advanced drugs against SDC4 (repotrectinib), ranked by Phase 2+ trials. Live from ClinicalTrials.gov.
- Bristol-Myers SquibbBristol-Myers Squibb · 3 of 4 trials Phase 2+
- Emily SlotkinMemorial Sloan Kettering Cancer Center · 1 of 1 trials Phase 2+
- Jason MouabbiM.D. Anderson Cancer Center · 1 of 1 trials Phase 2+Ph2NCT06408168 · Phase II Study of REPotrectinib With or Without Fulvestrant in Patients With Hormone Receptor-positive Human Epidermal Growth Factor 2-negative Metastatic Invasive LObular Carcinoma Who Received a Prior Endocrine Therapy in Combination With Cyclin-dependent Kinase 4 and 6 Inhibitor (REPLOT Trial)brief
- Laurent GREILLIERAP-HM / Groupe Français d'Onco-Pneumologie · 1 of 1 trials Phase 2+
- Olivier BYLICKIHIA Sainte Anne / Groupe Français d'Onco-Pneumologie · 1 of 1 trials Phase 2+
- Thorsten FürederMedical University of Vienna, Vienna General Hospital (Austria) · 1 of 1 trials Phase 2+
- Andrés Aguilar HernándezInstitute of oncology Dr. Rosell · 0 of 1 trials Phase 2+
Registry trials of repotrectinib updated in the last three years, counted by the country group of their listed sites. A trial with sites in several groups counts in each; 8 of 13 have all sites in one country.
Site counts are not patients per country, and trials registered only outside ClinicalTrials.gov are not covered. Where sites are is a fact about the record, not a judgement of its quality. Europe is the EU and EEA, the UK and Switzerland. Source: ClinicalTrials.gov, fetched live.
4 trials of drugs against SDC4 were stopped early
Terminated, withdrawn and suspended interventional trials of repotrectinib, newest update first, live from ClinicalTrials.gov. Each reason is quoted exactly as the registry gives it; we do not sort reasons into safety, efficacy or business. Dates are the last registry update. Showing the 4 most recent of 4.
- terminated · 2026-01-05 · M.D. Anderson Cancer Center · Repotrectinib“<75% Participation”
- withdrawn · 2025-04-01 · Turning Point Therapeutics, Inc. · matched by the registry's drug synonyms“Insufficient enrollment”
- terminated · 2024-04-02 · Turning Point Therapeutics, Inc. · matched by the registry's drug synonyms“Inability to achieve and optimize a dose that could provide a positive benefit risk profile”
- withdrawn · 2023-09-26 · Turning Point Therapeutics, Inc. · repotrectinib (TPX-0005)“Insufficient enrollment”
Paediatric incentives and obligations for SDC4's drugs
For repotrectinib: what EMA and FDA publish about paediatric plans, orphan status and pediatric approvals, and how many registered studies take children. Each line is a yes, no or not published fact from the record linked under it; none of it is a forecast.
- FDA pediatric target list: no · SDC4 is not on the listRule: Target is on FDA's Pediatric Molecular Target List (relevant targets). Source: FDA Pediatric Molecular Target List (Listed as February 2026 on the FDA Pediatric Oncology page; the file served is 9.7.22_the_relevant_molecular_target_list.xlsx, whose Summary of Changes sheet is headed 'SEPTEMBER 2022 UPDATE' (footnote date 2022-09-01)), 2026-11-11
- EU paediatric investigation plan: yes · EMEA-002635-PIP02-21-M02 (repotrectinib, Treatment of all conditions included in the category of malignant neoplasms (except haematopoietic neoplasms)): PM: decision on the application for modification of an agreed PIP, 9 Aug 2023Rule: An EMA PIP decision (agreement, modification or waiver) lists the drug as its active substance, exact name. Source: EMA EMEA-002635-PIP02-21-M02, 2026-11-11
- EU orphan designation: no · No EU orphan designation names repotrectinibRule: An EU orphan designation lists the drug as its active substance (exact name) or belongs to a medicine that does; withdrawn and expired designations are listed with their status. Source: EMA data download (dated snapshot), 2026-11-11
- Authorised in the EU: yes · Augtyro: authorised since 13 Jan 2025, conditionalRule: An EMA medicine record lists the drug as its active substance or INN, exact name; national-only authorisations are not in this file. Source: EMA EPAR Augtyro, 2026-11-11
- FDA orphan designation: not published · FDA's orphan designation database turns away automated requests, so this app does not read it; search it by hand at the linkRule: Would be: an FDA orphan designation names the drug. Source: FDA orphan designations search
- FDA pediatric oncology approval: yes · Repotrectinib [Augtyro], 13 Jun 2024: Treatment of adult and pediatric patients 12 years of age and older with solid tumors that have a neurotrophic tyrosine receptor kinase (NTRK) gene fusion, are locally advanced or metastatic or where surgical resection is likely to result in severe morbidity, and have progressed following treatment or have no satisfactory alternative therapyRule: FDA's Pediatric Oncology Drug Approvals table names the drug. Source: FDA Pediatric Oncology Drug Approvals (content current as of 2026-03-03), 2026-11-11
- Registered studies open to children: yes · 3 interventional studies of repotrectinib include patients under 18; 3 are recruiting, not yet recruiting or activeRule: The registry's age group includes Child (birth to 17 years), which also counts studies that set no minimum age. Source: ClinicalTrials.gov search, 2026-11-11
Rare pediatric disease voucher. FDA, content current as of 29 Apr 2026: “As of February 3, 2026, enactment of the Consolidated Appropriations Act, 2026, the rare pediatric disease PRV program will sunset after September 30, 2029. FDA may not award any PRVs under this program after September 30, 2029.” Voucher sale prices are not shown here; they appear only as company-reported news. FDA: Rare Pediatric Disease Designation and Priority Review Voucher Programs
All 1 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.
| Drug | Type | Highest stage | Indications | Source records |
|---|---|---|---|---|
| REPOTRECTINIB | Small molecule | approval | non-small cell lung carcinoma, cancer, neoplasm, invasive lobular breast carcinoma, anaplastic large cell lymphoma, desmoplastic small round cell tumor, neuroblastoma | Open Targets · ChEMBL |