CD79B CD79b molecule
ENSG00000007312 · protein coding · Open Targets profile
Required in cooperation with CD79A for initiation of the signal transduction cascade activated by the B-cell antigen receptor complex (BCR) which leads to internalization of the complex, trafficking to late endosomes and antigen presentation. Enhances phosphorylation of CD79A, possibly by recruiting kinases which phosphorylate CD79A or by recruiting proteins which bind to CD79A and protect it from dephosphorylation. {ECO:0000269|PubMed:12097390, ECO:0000269|PubMed:8617796, ECO:0000269|PubMed:9057631}.
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
- High-Quality Pocket
- Antibody
- GO CC high conf, UniProt loc med conf, UniProt SigP or TMHMM, Human Protein Atlas loc
- PROTAC
- Database Ubiquitination, Half-life Data
- Other modalities
- Approved Drug
gnomAD loss of function constraint: o/e 0.2331800013780594 (upper bound 0.4379900097846985). 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 96 registry trials, updated in the last three years, of the most advanced drugs against CD79B (polatuzumab vedotin), ranked by Phase 2+ trials. Live from ClinicalTrials.gov.
- Liren QianNavy General Hospital, Beijing · 3 of 3 trials Phase 2+
- Ryan LynchFred Hutch/University of Washington Cancer Consortium · 2 of 2 trials Phase 2+
- Stephen D. SmithFred Hutch/University of Washington Cancer Consortium · 2 of 2 trials Phase 2+
- Adam OlszewskiBrown University Health · 1 of 1 trials Phase 2+
- Alex F HerreraCity of Hope Medical Center · 1 of 1 trials Phase 2+
- Barbara KiesewetterMedical University of Vienna · 1 of 1 trials Phase 2+
- Bertram GlaßHELIOS Klinik Berlin-Buch, Klinik für Hämatologie und Stammzelltransplantation · 1 of 1 trials Phase 2+
- Boyu HuSWOG Cancer Research Network · 1 of 1 trials Phase 2+
- Brian T HessSWOG Cancer Research Network · 1 of 1 trials Phase 2+
- Catherine S DiefenbachAcademic and Community Cancer Research United · 1 of 1 trials Phase 2+
- Christopher DittusDivision of Hematology | Lymphoma Program Lineberger Comprehensive Cancer Center · 1 of 1 trials Phase 2+
- Dai ChiharaUT MD Anderson Cancer Center · 1 of 1 trials Phase 2+
- David A Russler-GermainWashington University School of Medicine · 1 of 1 trials Phase 2+
- Dipenkumar ModiBarbara Ann Karmanos Institute · 1 of 1 trials Phase 2+
- Elena ParovichnikovaNational Research Center for Hematology · 1 of 1 trials Phase 2+
Registry trials of polatuzumab vedotin 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; 68 of 88 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. 8 trials list no sites and are left out. Source: ClinicalTrials.gov, fetched live.
8 trials of drugs against CD79B were stopped early
Terminated, withdrawn and suspended interventional trials of polatuzumab vedotin, 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 8 most recent of 8.
- terminated · 2026-04-16 · UNC Lineberger Comprehensive Cancer Center · Polatuzumab vedotin (PV)“Funding”
- withdrawn · 2025-10-03 · Karyopharm Therapeutics Inc · Polatuzumab Vedotin“Sponsor decision”
- terminated · 2024-09-19 · Academic and Community Cancer Research United · Polatuzumab Vedotin“Trial closed due to low accrual rate”
- terminated · 2024-07-11 · Hoffmann-La Roche · Polatuzumab Vedotin“Decision to discontinue the study based on broader development and strategic prioritisation. The Sponsor concludes there is no benefit-risk impact on the BO42203 study.”
- withdrawn · 2024-05-21 · Fondazione Italiana Linfomi - ETS · matched by the registry's drug synonyms“Sponsor decision”
- terminated · 2023-03-03 · Hoffmann-La Roche · Polatuzumab Vedotin“Sponsor's decision, no safety concerns”
- withdrawn · 2022-05-09 · University of Colorado, Denver · Polatuzumab Vedotin“Lack of sufficient patient population”
- withdrawn · 2021-10-05 · Celgene · Polatuzumab vedotin“Business objectives have changed”
Paediatric incentives and obligations for CD79B's drugs
For polatuzumab vedotin: 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 · CD79B 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: yes · EMEA-002255-PIP01-17 (polatuzumab vedotin, Treatment of mature B-cell neoplasms): W: decision granting a waiver in all age groups for all conditions or indications, 11 Apr 2018Rule: An EMA PIP decision (agreement, modification or waiver) lists the drug as its active substance, exact name. Source: EMA EMEA-002255-PIP01-17, 2026-11-11
- EU orphan designation: yes · EU/3/18/2013 positive 16 Apr 2018: Treatment of diffuse large B-cell lymphomaRule: 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 EU/3/18/2013, 2026-11-11
- Authorised in the EU: yes · Polivy: authorised since 16 Jan 2020, orphan medicineRule: 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 Polivy, 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 polatuzumab vedotinRule: 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 · 6 interventional studies of polatuzumab vedotin include patients under 18; 6 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 |
|---|---|---|---|---|
| POLATUZUMAB VEDOTIN | Antibody drug conjugate | approval | diffuse large B-cell lymphoma, B-cell non-Hodgkin lymphoma, neoplasm, follicular lymphoma, high grade B-cell lymphoma, non-Hodgkin lymphoma, mantle cell lymphoma, lymphoma, +8 more | Open Targets · ChEMBL |