Journal of Inherited Metabolic Disease
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Journal of Inherited Metabolic Disease
@jimd-editors.bsky.social
The Journal of Inherited Metabolic Disease (JIMD) is the official journal of the Society for the Study of Inborn Errors of Metabolism (SSIEM).

Social Media maintained by James Nurse
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A baby with CPS1 deficiency, a world-first use of in vivo gene editing, and the emotional, ethical, and scientific questions that follow.

In the latest Podcast, Kiran Musunuru, Rebecca Ahrens-Nicklas, and Julien Baruteau discuss.

open.spotify.com/episode/3m2r...
New #JIMD guideline out now:
🧬 Tyrosine Hydroxylase Deficiency (THD)

Led by the iNTD network, it sets out how to:
Diagnose via CSF + genetics
Treat with L-dopa/DCI
Plan multidisciplinary care
📘 Consensus from 28 experts & patient reps.
👉 doi.org/10.1002/jimd...
#THD #RareDisease #MetabolicMedicine
November 18, 2025 at 8:12 AM
How late is too late to start CDCA in CTX?
We put that question directly to Tanyel Zübarioğlu, lead author of the largest long-term CTX treatment study to date.

The answer may change how you think about prognosis, access, and the real-world impact of CDCA therapy.

soundcloud.com/user-1090061...
November 18, 2025 at 8:08 AM
🧩 New in JIMD: a simple screening tool helps non-neurologists detect movement disorders in metabolic patients boosting sensitivity from 68% → 87%.

Quick, structured, and now validated.
Read open access 👉 doi.org/10.1002/jimd...

#JIMD #MovementDisorders #RareDisease
November 11, 2025 at 6:43 PM
🎧 The JIMD Podcast Research Round-Up is back!
Silvia Radenkovic & Rodrigo Starosta welcome Hilary Vernon & Austin Larson for a deep dive into mitochondrial disease — biomarkers, omics, and new therapeutic frontiers.

➡️ Listen now: open.spotify.com/episode/0cUZ...
#MitochondrialDisease #RareDisease
November 11, 2025 at 6:23 PM
If you heard the line about “switching off genes to treat OTC deficiency” in the latest JIMD Podcast — this is the story behind it.

Knocking down hepatic GLS2 reduced ammonia levels and mortality in a mouse UCD model.

🎧 Podcast: open.spotify.com/episode/6gv3...

#JIMD #ThinkMetabolic
November 6, 2025 at 9:54 AM
New in JIMD Reports: severe neurological presentation in siblings with COQ5-related primary CoQ10 deficiency — featuring recurrent strokes, optic atrophy, and functional validation in yeast.

🧬 Expanding the molecular and clinical spectrum of this ultra-rare disorder.

👉 doi.org/10.1002/jmd2...
November 6, 2025 at 8:19 AM
New in #JIMD 🔬
“Removal of Toxic Metabolites, Chelation: Manganese Disorders”
From Na₂CaEDTA to novel Mn-specific ligands, this review explores how chemistry can help tackle hypermanganesemia and manganism.
👉 doi.org/10.1002/jimd...
#Manganese #Chelation #RareDisease #MetabolicMedicine
November 5, 2025 at 1:17 PM
A baby with CPS1 deficiency, a world-first use of in vivo gene editing, and the emotional, ethical, and scientific questions that follow.

In the latest Podcast, Kiran Musunuru, Rebecca Ahrens-Nicklas, and Julien Baruteau discuss.

open.spotify.com/episode/3m2r...
November 4, 2025 at 10:41 AM
A 61-year-old with rhabdomyolysis, prolonged QT, and recurrent fatigue… but what ties it all together?

Dr Samuel Mackenzie joins Metabolic Mysteries to unravel a case that proves you’re never too old for a metabolic diagnosis.

🎧 New episode out now | on.soundcloud.com/l8QjmKo5JFvA...
October 28, 2025 at 8:26 AM
New insights into kidney disease in #MMA & #PA 👇

Zeyer et al. identify TGF-β-driven fibrosis as a key mechanism and show that losartan can normalize ECM remodeling in patient-derived cells.
A promising step toward antifibrotic therapy in organic acidurias.
🔗 doi.org/10.1002/jimd...
#Losartan
October 26, 2025 at 8:59 AM
A vital but underused part of IMD care

New @ernmetabern.bsky.social survey across 23 countries finds most IMD centres have palliative care but few patients are referred.

Early, integrated, family-centred palliative care should be part of the metabolic pathway.

doi.org/10.1002/jimd...
October 26, 2025 at 8:53 AM
Trial readiness starts long before a drug enters the clinic.
New JIMD review from Opladen & colleagues (Heidelberg) shows how understanding the natural history of IMDs, through registries, RWD, PROMs & predictive models, underpins every successful rare disease trial.

🔗 doi.org/10.1002/jimd.70102
October 25, 2025 at 5:56 AM
In this new episode, François Maillot and Ida Schwartz discuss their systematic review of IMDs diagnosed in adults over 65.

The findings reveal decades-long diagnostic delays and remind us to Think Metabolic at any age.

Spotify: open.spotify.com/episode/7qdL...
Or wherever you get your podcasts.
October 21, 2025 at 10:27 AM
🧬 National data from Japan:
91% hyperammonemia • 50% intellectual disability • LT helps but can’t cure • Early diagnosis is key.

onlinelibrary.wiley.com/doi/10.1002/...
#ThinkMetabolic #JIMD
October 18, 2025 at 2:33 PM
New in JIMD:
Epifani et al. identify a circulating miRNA signature for PMM2-CDG.
6 key miRNAs → AUC > 0.9 using machine learning; miR-122-5p emerges as a liver-linked marker reflecting neurological & endocrine pathways.
🧬 Toward blood-based biomarkers for CDG.
🔗 doi.org/10.1002/jimd...
October 16, 2025 at 8:34 PM
New in JIMD Reports:
First expanded-access treatment with govorestat (AT-007) in a child with PMM2-CDG: safe, well-tolerated, and linked to improved liver enzymes, coagulation factors, and developmental scores.
🔗 doi.org/10.1002/jmd2...

#CDG #PMM2 #JIMDReports #RareDisease
October 16, 2025 at 8:21 PM
🎧 New #ResearchRoundUp!
With Rodrigo away, James Nurse joins Silvia Radenkovic to chat with Dr Judith Jans and Dr Devin Oglesbee about the promise and pitfalls of untargeted metabolomics in IMD diagnostics.

🎙️ Listen here: open.spotify.com/episode/6YbH...

#JIMDPodcast #Metabolomics #ThinkMetabolic
October 14, 2025 at 11:54 AM
From lifesaving to life-improving: liver transplantation is reshaping how we treat inherited metabolic diseases.

This excellent review explores evolving indications, outcomes > 90%, and the precision-medicine future of metabolic transplant care.
onlinelibrary.wiley.com/doi/10.1002/...
#JIMD #IMD
October 11, 2025 at 5:34 AM
Allopurinol: not just for gout?
New JIMD paper shows improved cognition & adaptive skills in children with adenylosuccinate lyase deficiency after a year of treatment.
Younger patients benefitted most, linking metabolic correction to developmental gains.
doi.org/10.1002/jimd...
#ThinkMetabolic #ADSL
October 8, 2025 at 10:20 AM
Pharmacological chaperones for OTC deficiency, can small molecules stabilise urea-cycle enzymes and offer a new therapy?

Dr Alexander Laemmle joins me to discuss how iPSC-derived hepatocytes are bringing bench research closer to the clinic.

soundcloud.com/user-1090061...
October 7, 2025 at 8:44 AM
New: Priya Kishnani et al. revisit the genetics of hypophosphatasia — from inheritance patterns to the challenges of heterozygote disease and variant reclassification.
Essential update for anyone diagnosing or managing HPP.
#Hypophosphatasia #ThinkMetabolic

onlinelibrary.wiley.com/doi/10.1002/...
October 6, 2025 at 3:15 PM
Splenic artery aneurysm is a rare but dangerous complication of Gaucher disease.
🧬 Prevalence ~2.1% (2x higher than general population)
⚠️ Often linked to lack of ERT/SRT
💡 Routine splenic artery imaging may save lives
New study 👉 doi.org/10.1002/jmd2...
#Gaucher #RareDisease #JIMDReports
October 3, 2025 at 12:25 PM
Newborn screening saves lives in classic isovaleric aciduria.
📉 Mortality: 1.1% vs 10.9%
🧠 Developmental delay: 6.1% vs 51.2%
⚡ Earlier treatment start: 10 days vs 626 days
Meta-analysis of 240 cases across 23 countries.
👉 doi.org/10.1002/jimd...
#RareDisease #NewbornScreening
October 3, 2025 at 9:01 AM
Are #InheritedMetabolicDisorders more common than we think?
New review argues genotype-first data reveal IMDs in many “healthy” individuals — challenging assumptions about prevalence, penetrance & screening.
What should this mean for clinical care?
#ThinkMetabolic #Genomics
October 1, 2025 at 10:18 AM
🎧 50 years of newborn screening for galactosaemia in Ireland:

✅ Better survival
⚠️ Developmental challenges persist
Ina Knerr & Doireann Pereira share long-term insights in a new #JIMD Shortcast.

👉 soundcloud.com/user-1090061...

#NewbornScreening #RareDisease
October 1, 2025 at 9:35 AM