OncoSignal
Live from Open Targets Platform, fetched 2026-11-11 16:52 UTC. Every row links to its source record.

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}.

In 13 of 15 cancers, the evidence for CD79B 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)
00.250.50.751diffuse large B-cell lymphomadiffuse large B-cell lymphomadiffuse large B-cell lymphoma: somatic 0.75B-cell non-Hodgkin lymphomaB-cell non-Hodgkin lymphomaB-cell non-Hodgkin lymphoma: somatic 0.30diffuse large B-cell lymphoma of the ce…diffuse large B-cell lymphoma of the central nervous systemdiffuse large B-cell lymphoma of the central nervous system: somatic 0.61primary central nervous system lymphomaprimary central nervous system lymphomaprimary central nervous system lymphoma: somatic 0.61breast diffuse large B-cell lymphomabreast diffuse large B-cell lymphomabreast diffuse large B-cell lymphoma: somatic 0.61lymphoid neoplasmlymphoid neoplasmlymphoid neoplasm: somatic 0.61hemangioblastomahemangioblastomahemangioblastoma: somatic 0.61mantle cell lymphomamantle cell lymphomamantle cell lymphoma: somatic 0.46B-cell chronic lymphocytic leukemiaB-cell chronic lymphocytic leukemiaB-cell chronic lymphocytic leukemia: somatic 0.46follicular lymphomafollicular lymphomalymphomalymphomalymphoma: somatic 0.45Richter transformationRichter transformationRichter transformation: somatic 0.46high grade B-cell lymphomahigh grade B-cell lymphomalung adenocarcinomalung adenocarcinomalung adenocarcinoma: somatic 0.46melanomamelanomamelanoma: somatic 0.46

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.

33 of 88 trials of drugs against CD79B have sites only in United States

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.

Sites only in this groupSites here and elsewhere
United StatesUnited States: 33 trials with sites only hereUnited States: 15 trials with sites here and elsewhere48ChinaChina: 29 trials with sites only hereChina: 5 trials with sites here and elsewhere34EuropeEurope: 5 trials with sites only hereEurope: 17 trials with sites here and elsewhere22JapanJapan: 0 trials with sites only hereJapan: 5 trials with sites here and elsewhere5OtherOther: 3 trials with sites only hereOther: 15 trials with sites here and elsewhere18

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.
  • 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 2018
    Rule: 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 lymphoma
    Rule: 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 medicine
    Rule: 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 link
    Rule: 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 vedotin
    Rule: 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 active
    Rule: 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.

DrugTypeHighest stageIndicationsSource records
POLATUZUMAB VEDOTINAntibody drug conjugateapprovaldiffuse 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 moreOpen Targets · ChEMBL