OncoSignal
Live from Open Targets Platform, fetched 2026-11-12 07:13 UTC. Every row links to its source record.

RAMP1 receptor activity modifying protein 1

ENSG00000132329 · protein coding · Open Targets profile

Accessory protein that interacts with and modulates the function of G protein-coupled receptors including calcitonin gene- related peptide type 1 receptor (CALCRL) and calcitonin receptor (CALCR) (PubMed:33602864, PubMed:9620797, PubMed:35324283, PubMed:38603770). Required for the transport of CALCRL to the plasma membrane (PubMed:9620797). Together with CALCRL, form the receptor complex for the calcitonin gene-related peptides CGRP1/CALCA and CGRP2/CALCB (PubMed:33602864, PubMed:9620797). Together with CALCR, form the AMYR1 receptor complex for amylin/IAPP and CGRP1/CALCA (PubMed:35324283, PubMed:38603770). {ECO:0000269|PubMed:33602864, ECO:0000269|PubMed:35324283, ECO:0000269|PubMed:38603770, ECO:0000269|PubMed:9620797}.

3 of the 4 drugs recorded against RAMP1 are 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.

2 protein drugs at Approved: PRAMLINTIDE, PRAMLINTIDE ACETATE1 protein drug at Phase 2: DAVALINTIDE1 small molecule drug at Approved: ZAVEGEPANTProtein 3Small molecule 1Approved 3Phase 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 Withdrawn means the drug was pulled from the market or from development.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 RAMP1 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)
00.250.50.751colorectal carcinomacolorectal carcinomaesophageal squamous cell carcinomaesophageal squamous cell carcinomagastric cancergastric canceracute myeloid leukemiaacute myeloid leukemiaosteosarcomaosteosarcomaprostate cancerprostate cancerFamilial prostate cancerFamilial prostate cancerprostate carcinomaprostate carcinomaovarian neoplasmovarian neoplasmovarian neoplasm: germline 0.04cutaneous squamous cell carcinomacutaneous squamous cell carcinomapediatric supratentorial ependymomapediatric supratentorial ependymomalymphangioleiomyomatosislymphangioleiomyomatosismelanomamelanomaatypical teratoid rhabdoid tumoratypical teratoid rhabdoid tumormedulloblastomamedulloblastoma

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, Structure with Ligand, High-Quality Ligand, Druggable Family
Antibody
UniProt loc high conf, GO CC high conf, UniProt SigP or TMHMM
Other modalities
Advanced Clinical

gnomAD loss of function constraint: o/e 0.8531100153923035 (upper bound 1.6023999452590942). 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 26 registry trials, updated in the last three years, of the most advanced drugs against RAMP1 (pramlintide, zavegepant, davalintide), ranked by Phase 2+ trials. Live from ClinicalTrials.gov.

13 of 23 trials of drugs against RAMP1 have sites only in United States

Registry trials of pramlintide, zavegepant, davalintide 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; 22 of 23 have all sites in one country.

Sites only in this groupSites here and elsewhere
United StatesUnited States: 13 trials with sites only hereUnited States: 0 trials with sites here and elsewhere13ChinaChina: 1 trials with sites only hereChina: 1 trials with sites here and elsewhere2EuropeEurope: 6 trials with sites only hereEurope: 0 trials with sites here and elsewhere6OtherOther: 2 trials with sites only hereOther: 1 trials with sites here and elsewhere3

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

14 trials of drugs against RAMP1 were stopped early; 2 give no reason

Terminated, withdrawn and suspended interventional trials of pramlintide, zavegepant, davalintide, 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 14 most recent of 14.

  • terminated · 2026-04-29 · Icahn School of Medicine at Mount Sinai · Zavegepant
    “Study closing at current site. Study to start as new at different site.”
  • withdrawn · 2026-04-17 · Esbjerg Hospital - University Hospital of Southern Denmark · Pramlintide Acetate 1 MG/ML
    “suspended by the danish medical agency”
  • withdrawn · 2026-01-13 · Pfizer · Zavegepant 10 mg
    “Strategic decision to cancel the study based on adjusted clinical development plan.”
  • terminated · 2025-03-27 · Pfizer · BHV-3500 (zavegepant)
    “Strategic decision to discontinue the study based on adjusted clinical development plan. This decision is not based on any safety concerns.”
  • terminated · 2024-07-19 · Pfizer · Zavegepant
    “Strategic decision to discontinue the study based on adjusted clinical development plan. This decision is not based on any safety concerns.”
  • terminated · 2024-05-02 · Pfizer · Zavegepant (BHV-3500)
    “Lack of enrollment due to evolution of COVID-19 pandemic with reduction in patients at risk for severe disease and growing number of effective alternative therapies”
  • withdrawn · 2023-06-28 · H. Lee Moffitt Cancer Center and Research Institute · Pramlintide
    “Poor accrual”
  • terminated · 2022-03-28 · University of Virginia · matched by the registry's drug synonyms
    “Clinical staffing issues and COVID-19 pandemic”
  • withdrawn · 2021-07-22 · University of Maryland, Baltimore · Pramlintide acetate
    “Sponsor could not fund.”
  • terminated · 2020-10-20 · Texas Diabetes & Endocrinology, P.A. · matched by the registry's drug synonyms
    “Lack of patient population”
  • withdrawn · 2019-01-08 · University of Texas Southwestern Medical Center · Pramlintide
    No reason given
  • withdrawn · 2018-07-26 · University of Colorado, Denver · Pramlintide
    No reason given
  • terminated · 2015-04-15 · AstraZeneca · Pramlintide+Metreleptin
    “Results from previous study DFA102 demonstrated neutralizing activity to metreleptin in invitro assay in 2 participants.”
  • terminated · 2014-05-01 · University of Virginia · Closed loop with pramlintide, Open loop with pramlintide
    “Modified study; created new study as a result of these modifications”
Paediatric incentives and obligations for RAMP1's drugs

For pramlintide, zavegepant, davalintide: 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 4 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
PRAMLINTIDEProteinapprovaldiabetes mellitus, type 1 diabetes mellitus, type 2 diabetes mellitus, Hyperglycemia, Hypoglycemia, prediabetes syndrome, obesity disorder, Overweight, +1 moreOpen Targets · ChEMBL
PRAMLINTIDE ACETATEProteinapprovaltype 1 diabetes mellitus, obesity disorder, type 2 diabetes mellitusOpen Targets · ChEMBL
ZAVEGEPANTSmall moleculephase 4migraine disorder, COVID-19, asthmaOpen Targets · ChEMBL
DAVALINTIDEProteinphase 2obesity disorderOpen Targets · ChEMBL