OncoSignal
Live from Open Targets Platform, fetched 2026-11-11 20:05 UTC. Every row links to its source record.

IL15RA interleukin 15 receptor subunit alpha

ENSG00000134470 · protein coding · Open Targets profile

High-affinity receptor for interleukin-15 (PubMed:8530383). Can signal both in cis and trans where IL15R from one subset of cells presents IL15 to neighboring IL2RG-expressing cells (By similarity). In neutrophils, binds and activates kinase SYK in response to IL15 stimulation (PubMed:15123770). In neutrophils, required for IL15- induced phagocytosis in a SYK-dependent manner (PubMed:15123770). Expression of different isoforms may alter or interfere with signal transduction (PubMed:10480910). {ECO:0000250|UniProtKB:Q60819, ECO:0000269|PubMed:10480910, ECO:0000269|PubMed:15123770, ECO:0000269|PubMed:8530383}.

1 of the 2 drugs recorded against IL15RA is approved

Each band is a group of drugs. It runs from the kind of drug on the left to the furthest stage that drug has reached in any disease on the right. Thicker bands mean more drugs.

1 protein drug at Approved: NOGAPENDEKIN ALFA INBAKICEPT1 unknown drug at Phase 2: RECOMBINANT HUMAN INTERLEUKIN-15Protein 1Unknown 1Approved 1Phase 2 1

Approved bands are highlighted. Withdrawn means the drug was pulled from the market or from development. A combined phase counts as the later one (Phase 1/2 is shown as Phase 2). Hover a band for the drug names. Source: Open Targets Platform, fetched live.

In 1 of 15 cancers, the evidence for IL15RA comes mainly from inherited variants

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)
00.250.50.751neuroblastomaneuroblastomaneuroblastoma: germline 0.59non-small cell lung carcinomanon-small cell lung carcinomaacute myeloid leukemiaacute myeloid leukemiaprostate cancerprostate cancerglioblastomaglioblastomahead and neck cancerhead and neck cancerrenal cell carcinomarenal cell carcinomanonpapillary renal cell carcinomanonpapillary renal cell carcinomaclear cell renal carcinomaclear cell renal carcinomaB-cell chronic lymphocytic leukemiaB-cell chronic lymphocytic leukemialeukemialeukemiamelanomamelanomanon-Hodgkin lymphomanon-Hodgkin lymphomamantle cell lymphomamantle cell lymphomaprimary central nervous system lymphomaprimary central nervous system lymphoma

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

Antibody
UniProt loc high conf, GO CC high conf, UniProt SigP or TMHMM, Human Protein Atlas loc
PROTAC
Small Molecule Binder
Other modalities
Advanced Clinical

gnomAD loss of function constraint: o/e 1.0736000537872314 (upper bound 1.4896999597549438). 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 24 registry trials, updated in the last three years, of the most advanced drugs against IL15RA (nogapendekin alfa inbakicept, recombinant human interleukin-15), ranked by Phase 2+ trials. Live from ClinicalTrials.gov.

12 of 17 trials of drugs against IL15RA have sites only in United States

Registry trials of nogapendekin alfa inbakicept, recombinant human interleukin-15 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; 12 of 17 have all sites in one country.

Sites only in this groupSites here and elsewhere
United StatesUnited States: 12 trials with sites only hereUnited States: 5 trials with sites here and elsewhere17EuropeEurope: 0 trials with sites only hereEurope: 1 trials with sites here and elsewhere1OtherOther: 0 trials with sites only hereOther: 5 trials with sites here and elsewhere5

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. 7 trials list no sites and are left out. Source: ClinicalTrials.gov, fetched live.

9 trials of drugs against IL15RA were stopped early

Terminated, withdrawn and suspended interventional trials of nogapendekin alfa inbakicept, recombinant human interleukin-15, 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 9 most recent of 9.

  • withdrawn · 2026-08-28 · ImmunityBio, Inc. · Nogapendekin Alfa Inbakicept (N803)
    “The sponsor has changed the development plans which is not for safety reasons.”
  • withdrawn · 2026-06-22 · ImmunityBio, Inc. · Drug: Nogapendekin alfa inbakicept (NAI)
    “Sponsor decision”
  • terminated · 2026-05-26 · ImmunityBio, Inc. · Nogapendekin alfa inbakicept (NAI) + Nivolumab + Ipilimumab + Carboplatin + Nab-paclitaxel
    “There are no longer active subjects on QUILT-2.023. Data will be entered into clinicaltrials.gov within 1 year of the primary completion date.”
  • withdrawn · 2026-05-08 · ImmunityBio, Inc. · Nogapendekin alfa inbakicept (NAI)
    “New protocol developed”
  • withdrawn · 2026-05-08 · ImmunityBio, Inc. · matched by the registry's drug synonyms
    “New protocol developed”
  • terminated · 2022-05-17 · National Cancer Institute (NCI) · matched by the registry's drug synonyms
    “This study was terminated early due to manufacturer withdrawal of support (study medication) due to lack of enrollment.”
  • terminated · 2022-03-22 · National Cancer Institute (NCI) · matched by the registry's drug synonyms
    “The study was closed after > 1 year of inactivity.”
  • terminated · 2019-07-08 · Mackay Memorial Hospital · matched by the registry's drug synonyms
    “slow recruitment and high drop-out rate”
  • terminated · 2015-01-27 · National Cancer Institute (NCI) · matched by the registry's drug synonyms
    “Closed this protocol due to autoimmune toxicity.”
Paediatric incentives and obligations for IL15RA's drugs

For nogapendekin alfa inbakicept, recombinant human interleukin-15: 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.

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 2 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
NOGAPENDEKIN ALFA INBAKICEPTProteinapprovalnon-small cell lung carcinoma, Sepsis, acute respiratory distress syndrome, glioblastoma, head and neck cancer, prostate cancer, lymphopenia, urothelial carcinoma, +3 moreOpen Targets · ChEMBL
RECOMBINANT HUMAN INTERLEUKIN-15Unknownphase 2acute myeloid leukemia, clear cell renal carcinoma, HIV infectious disease, melanoma, non-Hodgkin lymphoma, primary central nervous system lymphoma, mantle cell lymphoma, B-cell chronic lymphocytic leukemia, +16 moreOpen Targets · ChEMBL