Evidence map›Paper›PMID 33874971›Full record

ReviewOrphanet journal of rare diseases2021

The multi-domain responder index: a novel analysis tool to capture a broader assessment of clinical benefit in heterogeneous complex rare diseases.

P K Tandon, Emil D Kakkis

8 registry-linked trialsOpen access · goldAbstract readReview
In one paragraph

Review in Orphanet journal of rare diseases, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 8 registered trials, which are not on this map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
3.5field-weighted citation impact, top 7% of its field
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.

NCT00067470 phase3completednot on this map

Study of Recombinant Human N-acetylgalactosamine 4-sulfatase (rhASB) in Patients With MPS VI

TypeinterventionalSponsorBioMarin PharmaceuticalRan2003 to 2004Enrolled39ConditionsMucopolysaccharidosis VIArmsPlacebo, N-acetylgalactosamine 4-sulfatase
NCT00069641 phase2 / phase3completednot on this map

A Phase II/III, Randomized, Double-Blind, Placebo-Controlled Study Evaluating the Safety and Efficacy of Weekly and Every Other Week Dosing Regimens of Iduronate-2-Sulfatase Enzyme Replacement Therapy in Patients With MPS II

TypeinterventionalSponsorShireRan2003 to 2005Enrolled96ConditionsMucopolysaccharidosis IIArmsIduronate-2-sulfatase enzyme replacement therapy, iduronate-2-sulfatase enzyme replacement therapy, Placebo
NCT00104234 phase3completednot on this map

A Multicenter, Multinational Open-Label Extension Study of Recombinant Human N-acetylgalactosamine 4-sulfatase (rhASB) in Patients With Mucopolysaccharidosis VI

TypeinterventionalSponsorBioMarin PharmaceuticalRan2004 to 2006Enrolled39ConditionsMucopolysaccharidosis VIArmsN-acetylgalactosamine 4-sulfatase, Placebo/rhASB
NCT00146770 phase3completednot on this map

A Multicenter, Multinational, Open-Label Extension Study of the Safety and Efficacy of Aldurazyme® (Laronidase) in Patients With Mucopolysaccharidosis I

TypeinterventionalSponsorGenzyme, a Sanofi CompanyRan2001 to 2005Enrolled45ConditionsMucopolysaccharidosis I, Hurler's Syndrome, Hurler-Scheie Syndrome, Scheie SyndromeArmsAldurazyme, placebo
NCT00912925 phase3completednot on this map

A Randomized, Double-Blind, Placebo-Controlled, Multicenter, Multinational, Clinical Study of Recombinant Human Alpha L-Iduronidase In Patients With Mucopolysaccharidosis I

TypeinterventionalSponsorGenzyme, a Sanofi CompanyRan2000 to 2001Enrolled45ConditionsMucopolysaccharidosis I, Hurlers Syndrome, Hurler-Scheie SyndromeArmsrhIDU (recombinant human-Alpha-L-Iduronidase), Placebo
NCT02230566 phase3completednot on this map

A Randomized, Placebo-Controlled, Blind-Start, Single-Crossover Phase 3 Study to Assess the Efficacy and Safety of UX003 rhGUS Enzyme Replacement Therapy in Patients With MPS 7

TypeinterventionalSponsorUltragenyx Pharmaceutical IncRan2014 to 2016Enrolled12ConditionsMPS 7, Sly Syndrome, Mucopolysaccharidosis, MPS VIIArmsUX003, Placebo
NCT02377921 phase3completednot on this map

A Phase 3 Randomized, Double-Blind, Placebo-Controlled Study to Evaluate the Efficacy and Safety of Sialic Acid Extended-Release Tablets in Patients With GNE Myopathy (GNEM) or Hereditary Inclusion Body Myopathy (HIBM)

TypeinterventionalSponsorUltragenyx Pharmaceutical IncRan2015 to 2017Enrolled89ConditionsHereditary Inclusion Body Myopathy, Distal Myopathy With Rimmed Vacuoles, Distal Myopathy, Nonaka Type, GNE MyopathyArmsaceneuramic acid extended-release (Ace-ER), Placebo
NCT02432144 phase3completednot on this map

A Long-Term Open-Label Treatment and Extension Study of UX003 rhGUS Enzyme Replacement Therapy in Subjects With MPS 7

TypeinterventionalSponsorUltragenyx Pharmaceutical IncRan2015 to 2019Enrolled12ConditionsSly Syndrome, MPS VII, Mucopolysaccharidosis, Mucopolysaccharidosis VIIArmsUX003
3 · Its place in the literature

Who cites it

18 citing papers in PubMed, 28 citations in OpenAlex.

  1. Trial
  2. Review
  3. Navigating Drug Discovery for Myhre Syndrome: The Complexity of a Multisystemic Rare Disease.American journal of medical genetics. Part C, Seminars in medical genetics · 2025
    Review
  4. Observational
  5. Article
  6. Clinical Trial End Points for Childhood CKD.Journal of the American Society of Nephrology : JASN · 2025
    Article
  7. Article
  8. Review
  9. Review
  10. Article
  11. Article
  12. Review
  13. Article
  14. Scaling genetic resources: New paradigms for diagnosis and treatment of rare genetic disease.American journal of medical genetics. Part C, Seminars in medical genetics · 2023
    Article
  15. Article
  16. MPSI Manifestations and Treatment Outcome: Skeletal Focus.International journal of molecular sciences · 2022
    Review
  17. Review
  18. Article
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

2 authors at 1 institution in 1 country.

P K TandonUltragenyx Pharmaceutical Inc., Novato, CA, USA. ptandon@ultragenyx.com.ORCID 0000-0001-7753-8923
Emil D KakkisUltragenyx Pharmaceutical Inc., Novato, CA, USA.
Ultragenyx Pharmaceutical (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In traditional clinical trial design, efficacy is typically assessed using a single primary endpoint in a randomized controlled trial to detect an expected treatment effect of a therapy in a narrowly selected patient population. This accepted paradigm is based on clinical evaluations that may not actually capture the breadth of the impact of a disease, which is especially true in the setting of complex, multisystem, rare diseases with small, extremely heterogeneous patient populations. The multi-domain responder index (MDRI) is a novel approach that accommodates complex and heterogeneous disease manifestations and evaluates a broad array of clinical disease without impairing the power or rigor of a study to fully understand a treatment. The MDRI sums the scores corresponding to clinically significant thresholds of change for each component domain in each individual patient, capturing the mean clinically meaningful change across multiple domains within individuals. This novel approach combines and then sums the results of independent domain endpoint responder analyses into one responder score to provide a broad basis for the assessment of efficacy. The impact of a treatment across multiple, physiologically independent domains, can be assessed clinically, reducing the adverse impact of heterogeneity on trial outcomes and allowing eligibility criteria to enroll a wider range of patients, ultimately resulting in efficacy and safety assessments of a therapy across a broad group of heterogeneous patients in rare disease programs.Trial registration The following studies are referenced within this manuscript (CLINICALTRIALS.GOV registration numbers): NCT00912925; NCT00146770; NCT00067470; NCT00104234; NCT00069641; NCT02230566; NCT02377921; NCT02432144.

Indexed as

Rare DiseasesHumansRandomized Controlled Trials as TopicLaronidaseMDRIMPSMucopolysaccharidosisMulti-domain responder indexVestronidase alfa

Identifiers

PMID33874971
PMCPMC8054393
OpenAlexW3155504111

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

and 2 more above

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.