ClinicalTrials.gg
Approved for marketingNCT05654701Updated Jun 27, 2025

Expanded Access Program of Palopegteriparatide in Patients With Hypoparathyroidism

An expanded access record providing Palopegteriparatide (TransCon PTH) in Hypoparathyroidism, sponsored by Ascendis Pharma Bone Diseases A/S. Approved for marketing. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-06-27.

Sponsored by Ascendis Pharma Bone Diseases A/S · Expanded access

Study type
Expanded access
Access type
Treatment IND/protocol
Ages
18 Years and older
Sex
All
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Study summary

To provide palopegteriparatide (TransCon PTH), an investigational parathyroid hormone (PTH) replacement therapy in an expanded access setting for adult patients with hypoparathyroidism who have previously received PTH-treatment, who meet the eligibility criteria for this protocol as described below and have a clear unmet medical need that cannot be adequately treated by a commercial product or a clinical trial.

Read the detailed description

This is an expanded access program for eligible participants who previously received PTH treatment and who are ineligible for an ongoing TransCon PTH clinical trial. The treating physician/investigator contacts Ascendis Pharma when, based on their medical opinion, a patient meets the criteria for inclusion in the expanded access program.

Participants will start with a fixed dose of study drug and will be individually and progressively titrated to an optimal dose based on serum calcium levels, followed by an individualized dosing period until palopegteriparatide is commercially available to the participant. For patients taking conventional therapy with calcium and or active forms of vitamin D, these therapies will be reduced in dose and/or discontinued during titration of palopegteriparatide.

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Conditions studied

  • Hypoparathyroidism

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Keywords

  • Hypoparathyroidism
  • Parathyroid Hormone
  • TransCon PTH
  • PTH(1-34)
  • Expanded Access
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In context

Hypoparathyroidism

128 studies on the registry are indexed under Hypoparathyroidism; 30 are open to participants now.

Browse Hypoparathyroidism studies →

Lead sponsor

Ascendis Pharma Bone Diseases A/S is the lead sponsor of 3 studies on the registry; 1 is open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Diagnosis of hypoparathyroidism.
  • Patients with previous PTH-treatment experience.
  • Serum albumin-adjusted calcium level ≥7.8 mg/dL and 25(OH) vitamin D in the normal range within 2 weeks before first dose.
  • (BMI) 17 - 40 kg/m2.
  • Be willing and able to give written by signing an Institutional Review Board (IRB)-approved Informed Consent Form (ICF).

Exclusion criteria

Exclusion Criteria:

  • Diagnosis of pseudohypoparathyroidism.
  • Currently enrolled in an drug or device study or has used an investigational drug or device within 30 days or 5 half-lives (whichever is longer) of Day 1.
  • Severe renal impairment (estimated \<30 mL/min/1.73m2).
  • Increased risk for osteosarcoma, such as those with Paget's disease of bone or unexplained elevations of alkaline phosphatase, hereditary disorders predisposing to osteosarcoma, or with a prior history of substantial external beam or implant radiation therapy involving the skeleton
  • Active within past 2 years excluding successfully resected thyroid carcinoma and non-melanoma skin cancer.
  • Severe or decompensated cardiac disease within 26 weeks, including but not limited to class IV or Stage D heart failure, unstable angina, myocardial infarction or uncontrolled arrhythmias.
  • Pregnant or lactating females, or females intending to become pregnant.
  • Known allergy and/or sensitivity to palopegteriparatide or its or prior PTH therapy.
Terms in these criteria, in plain language(6)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

GFR and eGFR (kidney filtering)

GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².

Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

Excipients

The other ingredients in a medicine besides the active drug, such as fillers, colours or preservatives.

05

Access details

Study type
Expanded access
Access type
Treatment IND/protocol

Available treatment

  • The investigational drug Palopegteriparatide (TransCon PTH) is supplied as a solution with a concentration of 0.3 mg PTH(1-34)/mL in a single-patient-use prefilled pen intended for subcutaneous injection.

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Where to request access

No study locations are listed for this record.

07

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 27, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT05654701
Lead sponsor
Ascendis Pharma Bone Diseases A/S
Responsible party
Sponsor
First posted
Dec 16, 2022
Last update
Jun 27, 2025
View the source record on ClinicalTrials.gov ↗

Requesting access

Expanded access is arranged between your doctor and the company. Ask your care team to contact the provider listed on this record.

No contact was published for this record. The registry link below has the sponsor’s details.

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Discussion

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