PTH1R parathyroid hormone 1 receptor
ENSG00000160801 · protein coding · Open Targets profile
G protein-coupled receptor for parathyroid hormone (PTH) and for parathyroid hormone-related peptide (PTHLH) (PubMed:10913300, PubMed:11773434, PubMed:18375760, PubMed:19674967, PubMed:27160269, PubMed:30975883, PubMed:35932760, PubMed:8397094). Ligand binding causes a conformation change that triggers signaling via guanine nucleotide-binding proteins (G proteins) and modulates the activity of downstream effectors, such as adenylate cyclase (cAMP) (PubMed:30975883, PubMed:35932760). PTH1R is coupled to G(s) G alpha proteins and mediates activation of adenylate cyclase activity (PubMed:20172855, PubMed:30975883, PubMed:35932760). PTHLH dissociates from PTH1R more rapidly than PTH; as consequence, the cAMP response induced by PTHLH decays faster than the response induced by PTH (PubMed:35932760). {ECO:0000269|PubMed:10913300, ECO:0000269|PubMed:11773434, ECO:0000269|PubMed:18375760, ECO:0000269|PubMed:19674967, ECO:0000269|PubMed:20172855, ECO:0000269|PubMed:27160269, ECO:0000269|PubMed:30975883, ECO:0000269|PubMed:35932760, ECO:0000269|PubMed:8397094}.
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.
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 Withdrawn means the drug was pulled from the market or from development.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.
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
- UniProt loc high conf, GO CC high conf, UniProt SigP or TMHMM, Human Protein Atlas loc
- PROTAC
- Database Ubiquitination, Small Molecule Binder
- Other modalities
- Approved Drug
gnomAD loss of function constraint: o/e 0.4528200030326843 (upper bound 0.6082299947738647). 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 37 registry trials, updated in the last three years, of the most advanced drugs against PTH1R (palopegteriparatide, teriparatide, abaloparatide, ostabolin-c), ranked by Phase 2+ trials. Live from ClinicalTrials.gov.
- Jeri W NievesHospital for Special Surgery, New York · 2 of 2 trials Phase 2+
- Angela RogersUniversity of Sheffield · 1 of 1 trials Phase 2+
- Benjamin LederMGH · 1 of 1 trials Phase 2+
- David HughesSheffield Teaching Hospitals NHS Foundation Trust · 1 of 1 trials Phase 2+
- Dolores M. ShobackSan Francisco VA Medical Center, San Francisco, CA · 1 of 1 trials Phase 2+
- Emily SteinHospital for Special Surgery, New York · 1 of 1 trials Phase 2+
- Eugene McCloskeyUniversity of Sheffield · 1 of 1 trials Phase 2+
- Jennifer WalshSheffield Teaching Hospitals NHS Foundation Trust · 1 of 1 trials Phase 2+
- Joseph LaneHospital for Special Surgery, New York · 1 of 1 trials Phase 2+
- Joy TsaiMGH · 1 of 1 trials Phase 2+
- Lang YangUniversity of Sheffield · 1 of 1 trials Phase 2+
- Margaret PaggiosiSheffield Teaching Hospitals NHS Foundation Trust · 1 of 1 trials Phase 2+
- Mark WilkinsonUniversity of Sheffield · 1 of 1 trials Phase 2+
- Neil BinkleyUniversity of Wisconsin, Madison · 1 of 1 trials Phase 2+
- Nicola PeelSheffield Teaching Hospitals NHS Foundation Trust · 1 of 1 trials Phase 2+
Registry trials of palopegteriparatide, teriparatide, abaloparatide, ostabolin-c 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; 31 of 34 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. 3 trials list no sites and are left out. Source: ClinicalTrials.gov, fetched live.
20 trials of drugs against PTH1R were stopped early; 3 give no reason
Terminated, withdrawn and suspended interventional trials of palopegteriparatide, teriparatide, abaloparatide, ostabolin-c, 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 20 most recent of 20.
- withdrawn · 2025-11-25 · Massachusetts General Hospital · matched by the registry's drug synonyms“Unsuccessful recruitment.”
- terminated · 2025-07-29 · University of Milano Bicocca · Teriparatide“Logistics/management problems at the recruiting center”
- terminated · 2024-09-19 · David Lunardini · Abaloparatide“Study terminated early due to low recruitment rate.”
- withdrawn · 2024-05-01 · Daniel Horwitz · Abaloparatide“Study withdrawn due to staffing/enrollment related challenges.”
- terminated · 2021-06-25 · University of Aarhus · Teriparatide“Eli Lilly has withdrawn support to the study of teriparatide and placebo pens. The study was not able to continue as a randomized study without the supply of placebo pens.”
- withdrawn · 2021-04-12 · Johns Hopkins University · Abaloparatide“Inability to obtain drugs from supplier.”
- terminated · 2020-08-21 · Johns Hopkins University · Teriparatide“Inability to analyze collected samples due to no funds.”
- terminated · 2018-02-07 · University of Michigan · Teriparatide“Study was terminated due to patient complications unrelated to study drugs”
- terminated · 2017-11-07 · GlaxoSmithKline · Teriparatide“Terminated for futility by sponsor after a pre-planned interim review of data”
- suspended · 2015-09-23 · Medical University of Vienna · Teriparatide, Placebo Teriparatide“no patients randomized”
- withdrawn · 2015-09-17 · Medical University of Vienna · Teriparatide“no participants”
- withdrawn · 2015-03-18 · Glostrup University Hospital, Copenhagen · matched by the registry's drug synonymsNo reason given
- terminated · 2014-12-22 · Mayo Clinic · Teriparatide“Funding problems”
- terminated · 2014-12-19 · University of Rochester · Teriparatide“The study was terminated due to poor enrollment.”
- terminated · 2014-10-29 · Papageorgiou General Hospital · teriparatide“due to financial problems”
- terminated · 2013-04-29 · The Emmes Company, LLC · Parathyroid Hormone (teriparatide)“Study stopped because of toxicity concerns.”
- withdrawn · 2013-01-16 · Leland Graves III, MD · teriparatideNo reason given
- terminated · 2012-12-06 · M.D. Anderson Cancer Center · Teriparatide (Forteo)“Terminated due to slow accrual.”
- withdrawn · 2009-06-04 · Zelos Therapeutics · matched by the registry's drug synonyms“Change in company direction”
- withdrawn · 2008-03-13 · Nastech Pharmaceutical Company, Inc. · Teriparatide, Teriparatide Nasal SprayNo reason given
Paediatric incentives and obligations for PTH1R's drugs
For palopegteriparatide, teriparatide, abaloparatide, ostabolin-c: 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: no · PTH1R is not on the listRule: 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 · EMA/PE/0000241327 (palopegteriparatide, Treatment of hypoparathyroidism): PM: decision on the application for modification of an agreed PIP, 16 May 2025; EMEA-001667-PIP01-14 (abaloparatide, Treatment of osteoporosis): W: decision granting a waiver in all age groups for all conditions or indications, 24 Nov 2014; EMEA-001135-PIP01-11 (teriparatide, Treatment of fractures;Treatment of osteoporosis): W: decision granting a waiver in all age groups for all conditions or indications, 2 Aug 2011Rule: 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: yes · EU/3/20/2350 positive 19 Oct 2020: Treatment of hypoparathyroidism; EU/3/16/1689 positive 27 Jun 2016: Treatment of hypoparathyroidismRule: 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: yes · Yorvipath: authorised since 17 Nov 2023, orphan medicine; Kauliv: authorised since 12 Jan 2023; Zandoriah: authorised since 27 Apr 2026; Terrosa: authorised since 4 Jan 2017; +11 moreRule: 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 palopegteriparatide, teriparatide, abaloparatide, ostabolin-cRule: FDA's Pediatric Oncology Drug Approvals table names the drug. Source: FDA Pediatric Oncology Drug Approvals (content current as of 2026-03-03), 2026-11-12
- Registered studies open to children: yes · 12 interventional studies of palopegteriparatide, teriparatide, abaloparatide, ostabolin-c include patients under 18; 2 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, 2026-11-12
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 6 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.