ROR1 ROR family WNT receptor 1
ENSG00000185483 · protein coding · Open Targets profile
Has very low kinase activity in vitro and is unlikely to function as a tyrosine kinase in vivo (PubMed:25029443). Receptor for ligand WNT5A which activates downstream NFkB signaling pathway and may result in the inhibition of WNT3A-mediated signaling (PubMed:25029443, PubMed:27162350). In the inner ear, crucial for spiral ganglion neurons to innervate auditory hair cells (PubMed:27162350). Via IGFBP5 ligand, forms a complex with ERBB2 to enhance CREB oncogenic signaling (PubMed:36949068). {ECO:0000269|PubMed:25029443, ECO:0000269|PubMed:27162350, ECO:0000269|PubMed:36949068}.
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
- Structure with Ligand, Druggable Family
- Antibody
- Advanced Clinical, GO CC high conf, UniProt SigP or TMHMM
- PROTAC
- Database Ubiquitination
gnomAD loss of function constraint: o/e 0.24105000495910645 (upper bound 0.35370001196861267). 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 5 registry trials, updated in the last three years, of the most advanced drugs against ROR1 (cirmtuzumab), ranked by Phase 2+ trials. Live from ClinicalTrials.gov.
- Benjamin M HeymanUniversity of California, San Diego · 1 of 1 trials Phase 2+
- Michael ChoiUniversity of California, San Diego · 1 of 1 trials Phase 2+
- Catriona JamiesonUniversity of California, San Diego · 0 of 1 trials Phase 2+
- Michael Y ChoiUniversity of California, San Diego · 0 of 1 trials Phase 2+
- Rana McKayUCSD · 0 of 1 trials Phase 2+
Registry trials of cirmtuzumab 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; 5 of 5 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.
2 trials of drugs against ROR1 were stopped early
Terminated, withdrawn and suspended interventional trials of cirmtuzumab, 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 2 most recent of 2.
- terminated · 2024-10-09 · University of California, San Diego · Cirmtuzumab“Oncternal closing clinical trial operations.”
- withdrawn · 2023-04-21 · Oncternal Therapeutics, Inc · matched by the registry's drug synonyms“Due to a strategic reprioritization based on the rapidly changing clinical and commercial landscape for Bruton's tyrosine kinase inhibitors (BTK inhibitors)”
Paediatric incentives and obligations for ROR1's drugs
For cirmtuzumab: 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: yes · ROR1 is on the list. Membership alone neither requires nor waives a pediatric study.Rule: 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: no · No EMA paediatric investigation plan decision names cirmtuzumabRule: An EMA PIP decision (agreement, modification or waiver) lists the drug as its active substance, exact name. Source: EMA data download (dated snapshot), 2026-11-11
- EU orphan designation: no · No EU orphan designation names cirmtuzumabRule: 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: no · EMA lists no centrally authorised medicine of cirmtuzumabRule: 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 data download (dated snapshot), 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: no · FDA's table lists no pediatric approval of cirmtuzumabRule: 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: no · No interventional study of cirmtuzumab includes patients under 18Rule: 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 |
|---|---|---|---|---|
| CIRMTUZUMAB | Antibody | phase 3 | mantle cell lymphoma, diffuse large B-cell lymphoma, B-cell chronic lymphocytic leukemia, gastric cancer, non-small cell lung carcinoma, ovarian cancer, exocrine pancreatic carcinoma, triple-negative breast carcinoma, +10 more | Open Targets · ChEMBL |