Society for Endocrinology - a world-leading authority on hormones

UK NHS HypoPT- UK Natural History Study of Hypoparathyroidism

If you would like to get involved, please complete the contact form.

Register your site

 

UK NHS HypoPT- UK Natural History Study of Hypoparathyroidism

Epidemiological Insights

Although it will be difficult to accurately estimate prevalence and incidence of hypoparathyroidism using a cohort study based on patient self-enrolment and Clinician encouraged enrolment, it will nevertheless provide incidence & prevalence of complications, mortality and HRQoL outcomes within the studied cohort. This in turn can be extrapolated to the wider population, depending upon the end sample size as the  UK epidemiological insights remain poorly characterized. This information is crucial for healthcare planning, resource allocation, and identifying regional disparities in diagnosis and care.

ii) Standardizing Care

Variation in clinical practice is a major challenge in managing hypoparathyroidism. For example, treatment strategies for post-surgical hypoparathyroidism differ widely among UK clinicians. A cohort study would facilitate the development of UK-standardized protocols by analyzing real-world treatment patterns and outcomes. This could reduce unwarranted variations in care and improve patient outcomes.

iii) Facilitating Research

A UK study would serve as a resource for observational studies and clinical trials. By providing a centralized dataset, it would reduce recruitment barriers for research, enabling studies on novel therapies and interventions. For instance, emerging treatments like recombinant PTH (rhPTH) and PTH analogues could be evaluated in a real-world context, complementing clinical trial data).

iv) Distinguishing the UK Study

The UK NHS HYPOPT should build on the strengths of existing registries, such as PARADIGHM, the Swedish Hypoparathyroidism Registry, and the Danish Nationwide Registry, while addressing their limitations:

  • Broader Inclusion Criteria: Unlike PARADIGHM, which focuses predominantly on patients receiving PTH replacement therapy, the UK NHS HYPOPT should capture a more diverse patient population, including those on standard care.
  • Comprehensive Data on Comorbidities: The UK NHS HYPOPT will track long-term comorbidities like nephrocalcinosis, cardiovascular disease, and neurological disorders, areas underrepresented in some existing studies.
  • Patient-Centred Outcomes: Emphasis will be placed on patient-reported outcomes, (HRQoL questionnaires, Pregnancy questionnaires, Hospital episode questionnaires) ultimately guiding tailored treatments where possible.

vi) Empowering Patients

Patient involvement is central to the success of any study. Engaging patients through advocacy groups such as Parathyroid UK could enhance study participation and ensure that research priorities align with patient needs. Furthermore, studies can empower patients by providing them with information about their condition and fostering a sense of community.

Narendra Reddy

Jeremy Turner

Neil Gittoes

Vikki Stokes

Lavanya Pelluri

Christine May

Farhad Arshad

Sherwin Criseno

Sabapathy Balasubramanian

Neil Sharma, BAETS representative

Liz Glenister, Parathyroid UK

Helen Hopkins, Parathyroid UK

Jessica Davis, SFE

Marian Schini

Afroze Abbas

Emmanuel Ejji

Gowri Ratyanake

Zaki Hassan Smith

Albana Sykja

Anna Milan

Tom Kurzawinski

The aims of this data registry are:

  1. The study is designed to test the hypothesis that improved biochemical calcium control is associated with better health-related quality of life over time in patients with chronic hypoparathyroidism

     

    Primary Endpoints

    The primary objectives of this study are to evaluate the longitudinal change in HRQoL and EQ5D and its association with biochemical calcium control

    1.1 Quality of Life

    Quality of life (QoL) will be assessed using validated patient-reported outcome measures at predefined study time points:

    • HPQ-28 (Hypoparathyroidism Patient Questionnaire-28):
      A disease-specific instrument assessing physical, cognitive, and emotional burden associated with hypoparathyroidism.
    • EQ-5D (EuroQol 5-Dimension Instrument):
      A generic health status measure evaluating mobility, self-care, usual activities, pain/discomfort, and anxiety/depression, alongside a visual analogue scale (VAS).

    QoL outcomes will be analysed longitudinally to assess changes over time and correlations with biochemical control.

    1.2 Biochemical Control

    Biochemical control will be evaluated using routine laboratory parameters measured at baseline and at scheduled follow-up visits:

    • Adjusted serum calcium
    • Serum phosphate
    • Serum creatinine
    • Estimated glomerular filtration rate (eGFR)
    • 24-hour urinary calcium excretion
    • Serum magnesium
    • Serum 25-hydroxyvitamin D (25(OH)D)

    The primary biochemical outcome will be:

    • The proportion of patients achieving target serum calcium levels (2.0–2.3 mmol/L)

    This will be estimated from a sufficiently powered sample size of n = 250, allowing for calculation of a 95% confidence interval (CI) for the proportion achieving target calcaemia.

Potential Impact of a UK Hypoparathyroidism Cohort Study

  • Improved Patient Outcomes

By identifying gaps in care and facilitating evidence-based interventions, a study can improve health outcomes for patients with hypoparathyroidism. For example, data from PARADIGHM revealed suboptimal calcium management in many patients, prompting changes in clinical practice.

  • Economic Benefits

Understanding the economic burden of hypoparathyroidism—including direct healthcare costs and indirect costs such as lost productivity—can inform cost-effective interventions. A study would provide the data needed for such analyses, supporting better resource allocation.

  • Advancing Global Research

A UK study could collaborate with international initiatives, contributing to global efforts to understand hypoparathyroidism. Such collaboration would enhance the generalizability of findings and accelerate the development of new treatments.

June 2026-June 2028

Data is made available to researchers, patient support groups, pharmaceutical or medical device companies, and other health care professionals via the data access request form in line with the data access policy of the Society for Endocrinology.

You can find more information about governance here

Alexion (Astrazeneca Rare Disease), Ascendis Pharma, Inomed Neurocare Limited, and Bridge Bio

These funders have provided funding towards this project via a sponsorship or grant funding. The project has been developed independently of these funders

NA