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ORPHA:284435

Glycogen storage disease due to lactate dehydrogenase H-subunit deficiency

low confidenceSubtype of disorder

Also known as: GSD due to lactate dehydrogenase H-subunit deficiency · Glycogenosis due to lactate dehydrogenase H-subunit deficiency · LDH-H subunit deficiency · Lactate dehydrogenase B deficiency

Publications

5,502

Trials

0

Interventional, condition-specific

Researchers

106

Distinct authors in sample

Gene link

LDHB

Limited

Readiness

3/6

Stages with a signal

How rare: How common this is has not been clearly measured.

Orphanet entry

Cross-references

Joined from Mondo / Orphanet. MeSH labels may enter searches; UMLS / OMIM / NCIT are stored for reference.

Additional Mondo synonyms (3)

glycogenosis due to lactate dehydrogenase H-subunit deficiency · lactate dehydrogenase B deficiency · lactate dehydrogenase-B deficiency

Research stages

Trial readiness signals

Where this condition sits on an open-data research pipeline — not how close a treatment is, and not medical advice. Empty stages often mean “not in these databases under this Mondo ID,” not “impossible.”

3/6 stages with a signal

No matched interventional trial; the gene is known and literature exists — preclinical or natural-history work may still be the practical next step.

  1. Gene identifiedPresent

    Limited — LDHB

  2. LiteraturePresent

    5,502 matched papers (4,392 in last 10 years) Source

  3. Phenotype characterisedPresent

    1 HPO annotations (e.g. Reduced circulating lactate dehydrogenase concentration) Source

  4. Animal modelNot found

    No Alliance genotype “model of” associations via Monarch for these Mondo IDs

  5. Orphan designationNot found

    No FDA or EMA orphan-drug designation matched this disease via UMLS or preferred name Source

  6. Interventional trialNot found

    No matched interventional trial under our ClinicalTrials.gov rules

Biology

Genes and phenotypes

Gene–disease validity from GenCC, plus phenotypes and animal models joined from Monarch Initiative via Mondo ID — not a clinical diagnosis aid.

Do we know what causes it?

Possibly — only limited evidence so far for LDHB.

GenCC classification: Limited.

Phenotypes (Monarch / HPO)

1

Associated phenotypes · MONDO:0013587

  • Reduced circulating lactate dehydrogenase concentration

Animal models (Monarch / Alliance)

None returned for this Mondo ID. Empty here is not proof that no model organism work exists under another name or gene.

Monarch fetch 2026-07-29

Therapies

Designations, candidates, and chemicals

FDA OOPD and EMA orphan designations, Open Targets clinical candidates, and CTD chemical associations via MyDisease.info. These never change the interventional-trial headline.

Orphan designation (FDA · EMA)

No designation matched this disease via UMLS or preferred name on the FDA OOPD mirror or EMA orphan register. Absence here is not proof that none exists under another wording.

Open Targets candidates

No drugs or clinical candidates returned for this Mondo ID on Open Targets.

CTD chemicals (MyDisease.info)

No CTD chemical associations returned for this Mondo ID.

Literature

Is anyone studying this?

5,502

5,502 papers — among the better-studied rare conditions, though still a fraction of common-disease literature (breast cancer: over 700,000). Median papers in the last 10 years for a rare disease in this dataset (publications denominator n=3967) is 59.

5,502 papers since the earliest indexed year in this search — median last-10-year count for a rare disease in this dataset is 59 (publications denominator n=3967).

4,392 in the last 10 years · low confidence

Phrase hits: 9 · MeSH hits: 1

Open Europe PMC search

Who's working on it?

106

Distinct author names in 9 sampled papers — named people below.

Who's working on it?

No interventional trial matched this name; these authors publish on it in the sampled literature — a practical starting point for contact.

  1. 01
    Bahir I1 paper · 2013
    Papers in Europe PMC
  2. 02
    Bao J1 paper · 2017

    College of Animal Science and Technology, Northeast Agricultural University, Harbin, Heilongjiang, 150030, China.

    Papers in Europe PMC
  3. 03
    Beggs W1 paper · 2019

    Department of Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104.

    Papers in Europe PMC
  4. 04
    Belay G1 paper · 2019

    Department of Biology, Addis Ababa University, Addis Ababa, Ethiopia.

    Papers in Europe PMC
  5. 05
    Belinky F1 paper · 2013
    Papers in Europe PMC
  6. 06
    Benazzo A1 paper · 2017

    Department of Life Sciences and Biotechnology, University of Ferrara, 44121 Ferrara, Italy.

    Papers in Europe PMC
  7. 07
    Bertorelle G1 paper · 2017

    Department of Life Sciences and Biotechnology, University of Ferrara, 44121 Ferrara, Italy; ggb@unife.it.

    Papers in Europe PMC
  8. 08
    Boitani L1 paper · 2017

    Department of Biology and Biotechnologies "Charles Darwin," University of Rome La Sapienza, 00185 Rome, Italy.

    Papers in Europe PMC
  9. 09
    Bunnefeld L1 paper · 2017

    Institute of Evolutionary Biology, University of Edinburgh, Edinburgh EH9 3FL, United Kingdom.

    Papers in Europe PMC
  10. 10
    Cahill JA1 paper · 2017

    Department of Ecology and Evolutionary Biology, University of California, Santa Cruz, CA 95064.

    Papers in Europe PMC

Clinical research

Is a treatment being tested?

0

interventional trials for this specific condition

No interventional trial testing a treatment matched this specific condition name on ClinicalTrials.gov (observational studies and pan-disease registries are listed separately when present).

Data as of 11 September 2026 · last trial check 11 September 2026

No matched interventional trials. This is true for 77.2% of diseases in the trials denominator (5501 of 7126). Here are the researchers publishing on it.

low confidence · 38.6th percentile (trials denominator)

Recruiting interventional trials

From the matched ClinicalTrials.gov set

No interventional trial testing a treatment was found for this specific condition name on ClinicalTrials.gov.

See who's working on it — people publishing on this disease are often the practical next contact when no trial is listed.

Other registries (secondary)

Broader net from EU CTIS, ISRCTN, and ICTRP when available — deduped against ClinicalTrials.gov IDs already counted above. Dual-model LLM relevance gates what we keep. These rows are not added to the interventional headline.

raw 0 · after dedupe 0 · already on CT.gov 0 · kept 0 · parent 0 · uncertain 0 · dropped 0 · fetched 2026-07-30

Source notes: ictrp: Error: ICTRP public search unavailable (WHO portal is SPA-only; SOAP needs partnership). Tried: https://apps.who.int/tri

No secondary-registry studies passed dual-model relevance for this condition name (after dedupe).

Where to find support

Condition-specific patient organisations, when Orphanet lists them, are on the disease’s Orphanet page. We also link umbrella groups that support undiagnosed and ultra-rare families.

Orphanet entry for Glycogen storage disease due to lactate dehydrogenase H-subunit deficiency — check Associations / patient organisations on that page.

India — NPRD

Last verified 2026-07-26

This ORPHAcode is not on our curated NPRD list (direct or Mondo-parent match). That does not decide clinical eligibility; families in India should ask a notified Centre of Excellence about current coverage.

Hand-curated for this project. ORPHAcode mappings are best-effort and may be incomplete or imprecise for umbrella categories. Parent (Mondo) matches mean the policy lists a broader category — confirm eligibility with a Centre of Excellence. Financial entitlements summarised from public policy statements and may change. This is not official government guidance.

How we counted this

Europe PMC query (preferred label + any corrected label + Orphanet and Mondo exact synonyms, stoplisted; unioned with resolved MeSH labels when available). UMLS / OMIM / NCIT cross-references are stored on the overview but are not added to the query string.

("Glycogen storage disease due to lactate dehydrogenase H-subunit deficiency" OR "GSD due to lactate dehydrogenase H-subunit deficiency" OR "Glycogenosis due to lactate dehydrogenase H-subunit deficiency" OR "LDH-H subunit deficiency" OR "Lactate dehydrogenase B deficiency" OR "lactate dehydrogenase-B deficiency") OR (MESH:"Lactate Dehydrogenase B Deficiency") OR ("LDHB" OR "LDHB syndrome" OR "LDHB-related")

Run this search on Europe PMC

MeSH descriptor terms unioned into the query: Lactate Dehydrogenase B Deficiency

ClinicalTrials.gov query (quoted phrases + MeSH via query.cond, plus recall-expansion terms when used):

"Glycogen storage disease due to lactate dehydrogenase H-subunit deficiency" OR "GSD due to lactate dehydrogenase H-subunit deficiency" OR "Glycogenosis due to lactate dehydrogenase H-subunit deficiency" OR "LDH-H subunit deficiency" OR "Lactate dehydrogenase B deficiency" OR "lactate dehydrogenase-B deficiency"

Study-type breakdown: 0 interventional · 0 observational · 0 expanded access. Only interventional studies enter the trial headline.

Query health: ok — strategies attempted: phrase, mesh; with hits: phrase, mesh

Run this search on ClinicalTrials.gov

Confidence reasoning

  • Preferred label is multi-word and distinctive
  • No synonyms dropped by stoplist
  • No label/synonym collisions with other diseases in this corpus
  • Publication count (5502) is extremely high with unknown/missing prevalence — treat as possible over-matching, not proven research intensity

Ingested 2026-07-27T12:07:04.577Z