Evidence map›Paper›PMID 35854311›Full record

ArticleOrphanet journal of rare diseases2022

Clinical profiles of treated and untreated adults with hypophosphatasia in the Global HPP Registry.

Kathryn M Dahir, Lothar Seefried, Priya S Kishnani, Anna Petryk, Wolfgang Högler, Agnès Linglart, Gabriel Ángel Martos-Moreno, Keiichi Ozono, Shona Fang, Cheryl Rockman-Greenberg

Registry-linked trialAbstract read
In one paragraph

Article in Orphanet journal of rare diseases, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02306720 (An Observational, Longitudinal, Prospective, Long-Term Registry Of Patients With Hypophosphatasia), which is not on this map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT02306720 enrolling by invitationnot on this map

An Observational, Longitudinal, Prospective, Long-Term Registry Of Patients With Hypophosphatasia (HPP)

Typeobservational_patient_registrySponsorAlexion Pharmaceuticals, Inc.Ran2015 to 2031Enrolled1,571ConditionsHypophosphatasia (HPP)
3 · Its place in the literature

Who cites it

31 citing papers in PubMed.

  1. A randomized Phase 1b trial evaluating the pharmacodynamics of ilofotase alfa in adults with hypophosphatasia.Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2026
    Trial
  2. Prevalence of hypophosphatasia in general and selected patient populations: a systematic review.Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2026
    Review
  3. Low alkaline phosphatase in adults: implications for the diagnosis of hypophosphatasia during evaluation for osteoporosis.Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2026
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Revisiting the Genetics of Hypophosphatasia.Journal of inherited metabolic disease · 2025
    Review
  11. Article
  12. Article
  13. Review
  14. Observational
  15. Review
  16. Review
  17. Disease burden byJournal of medical genetics · 2025
    Article
  18. Review
  19. Diagnosis and Treatment of Hypophosphatasia.Calcified tissue international · 2025
    Review
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors.

Kathryn M DahirProgram for Metabolic Bone Disorders at Vanderbilt, Endocrinology and Diabetes, Vanderbilt University Medical Center, 8210 Medical Center East, 1215 21st Avenue South, Nashville, TN, 37232-8148, USA. kathryn.dahir@vumc.org.ORCID 0000-0002-9980-9138
Lothar SeefriedUniversity of Würzburg, Würzburg, Germany.
Priya S KishnaniDuke University Medical Center, Durham, NC, USA.
Anna PetrykAlexion, AstraZeneca Rare Disease, Boston, MA, USA.
Wolfgang HöglerDepartment of Paediatrics and Adolescent Medicine, Johannes Kepler University Linz, Linz, Austria.
Agnès LinglartDMU 3 SEA, Service d'endocrinologie et Diabète de L'enfant, filière OSCAR, Centre de Référence des Maladies Rares du Métabolisme du Calcium et du Phosphate, Paris-Saclay University, AP-HP, INSERM, Bicêtre Paris-Saclay Hospital, Le Kremlin-Bicêtre, France.
Gabriel Ángel Martos-MorenoDepartments of Pediatrics and Pediatric Endocrinology Hospital Infantil, CIBERobn, ISCIII, Universitario Niño Jesús, IIS La Princesa, Universidad Autónoma de Madrid, Madrid, Spain.
Keiichi OzonoOsaka University, Suita, Osaka, Japan.
Shona FangAlexion, AstraZeneca Rare Disease, Boston, MA, USA.
Cheryl Rockman-GreenbergUniversity of Manitoba, Winnipeg, MB, Canada.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe clinical signs and symptoms of hypophosphatasia (HPP) can manifest during any stage of life. The age at which a patient's symptoms are reported can impact access to targeted treatment with enzyme replacement therapy (asfotase alfa), as this treatment is indicated for patients with pediatric-onset HPP in most countries. As such, many patients reported to have adult-onset HPP typically do not receive treatment. Comparison of the disease in treated and untreated adult patients is confounded by the approved indication. To avoid this confounding factor, a comparison between baseline disease manifestations prominent among treated versus untreated adult patients was limited to those with pediatric-onset HPP using data collected from the Global HPP Registry. The hypothesis was that treated adults will have a greater disease burden at baseline than untreated adults. The analysis of disease manifestations in adults with adult-onset HPP was conducted separately.

resultsA total of 398 adults with HPP were included; 213 with pediatric-onset (114 treated, 99 untreated) and 141 with adult-onset HPP (2 treated and 139 untreated). The treated, pediatric-onset patients were more likely to have a history of pain (prevalence ratio [PR]: 1.3, 95% confidence interval [CI] 1.1, 1.4), skeletal (PR: 1.3, 95% CI 1.1, 1.6), constitutional/metabolic (PR: 1.7, 95% CI 1.3, 2.0), muscular (PR: 1.8, 95% CI 1.4, 2.1) and neurological (PR: 1.7, 95% CI 1.1, 2.3) manifestations of HPP, and also had poorer measures for health-related quality of life, pain, and disability compared with untreated pediatric-onset patients. In patients with adult-onset HPP, the most frequent signs and symptoms were chronic bone pain (52.5%), dental manifestations (42.6%), fatigue (23.4%), recurrent fractures or pseudofractures (22.0%), and generalized body pain (22.0%).

conclusionsAlong with the more classical skeletal signs and symptoms, pain, muscular, and constitutional/metabolic manifestations are common in adults with HPP, regardless of age of disease onset, highlighting a full spectrum of HPP manifestations.

Indexed as

HypophosphatasiaAdultAlkaline PhosphataseChildHumansPainQuality of LifeRegistriesAlkaline PhosphataseBurden of diseaseEnzyme replacement therapyHRQoLHypophosphatasia

Identifiers

PMID35854311
PMCPMC9295501

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.