Evidence map›Paper›PMID 27489777›Full record

ArticleMolecular genetics and metabolism reports2016

Clinical experience with N-carbamylglutamate in a single-centre cohort of patients with propionic and methylmalonic aciduria.

Alberto Burlina, Chiara Cazzorla, Elisa Zanonato, Emanuela Viggiano, Ilaria Fasan, Giulia Polo

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in Molecular genetics and metabolism reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04176523 (Understanding the Long-Term Management of Organic Acidemia Patients With CARBAGLU®), which is not on this map. Cited by 18 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 2 pooled it
2.1field-weighted citation impact, top 14% 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.

NCT04176523 recruitingnot on this mapstarted 2019, after this paper: background citation

Understanding the Long-Term Management of Organic Acidemia Patients With CARBAGLU®: A Mixed Methods Approach

TypeobservationalSponsorRECORDATI GROUPRan2019 to 2029Enrolled95ConditionsMethylmalonic Acidemia, Propionic AcidemiaArmsCarglumic Acid
3 · Its place in the literature

Who cites it

18 citing papers in PubMed, 2 syntheses or guidelines pooled it, 22 citations in OpenAlex.

  1. Guideline
  2. Pooled it
  3. Trial
  4. Review
  5. Observational
  6. [N-carbamylglutamate in the treatment of neonatal organic acidemia crisis: a report of five cases].Zhongguo dang dai er ke za zhi = Chinese journal of contemporary pediatrics · 2026
    Article
  7. Review
  8. Article
  9. Observational
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Neurological manifestations of organic acidurias.Nature reviews. Neurology · 2019
    Review
  16. Review
  17. Article
  18. Dietary practices in propionic acidemia: A European survey.Molecular genetics and metabolism reports · 2017
    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

6 authors at 1 institution in 1 country.

Alberto BurlinaDivision of Inherited Metabolic Diseases, University Hospital of Padova, Padova, Italy.
Chiara CazzorlaDivision of Inherited Metabolic Diseases, University Hospital of Padova, Padova, Italy.
Elisa ZanonatoDivision of Inherited Metabolic Diseases, University Hospital of Padova, Padova, Italy.
Emanuela ViggianoDivision of Inherited Metabolic Diseases, University Hospital of Padova, Padova, Italy.
Ilaria FasanDivision of Inherited Metabolic Diseases, University Hospital of Padova, Padova, Italy.
Giulia PoloDivision of Inherited Metabolic Diseases, University Hospital of Padova, Padova, Italy.
University of Padua · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe effect of long-term N-carbamylglutamate (NCG) treatment on the rate and severity of decompensations due to propionic aciduria (PA) and methylmalonic aciduria (MMA) is unknown. This paper presents clinical experience from a single-centre cohort of patients with PA and MMA who received continuous long-term treatment with NCG.

methodsThe effect of oral NCG treatment (initial dose: 50 mg/kg/day) was investigated in patients with PA or MMA who were experiencing frequent progressive episodes of metabolic decompensation, who had pathological levels of ammonia, and who were referred to the Division of Metabolic Diseases, University Hospital of Padova between August 2014 and December 2015. Clinical and biochemical data, including the number of metabolic decompensations, lactic acid, uric acid and plasma ammonia levels, protein intake and body weight, were collected before and after the initiation of NCG treatment.

resultsEight patients with PA (n = 4) and MMA (n = 4) aged 2-20 years were treated with NCG (50 mg/kg/day) for 7-16 months. Metabolic decompensation episodes decreased in number and severity, with three of the patients having no episodes (pre-treatment: 24 episodes; post-treatment: 9 episodes). After NCG treatment, all episodes were treated at home and none required hospitalisation, lactic acid values were 1.3-2.1 mmol/L and uric acid values were 0.21-0.36 mmol/L. Significant reductions in blood ammonia levels after NCG initiation were observed in five patients, whereas levels were reduced or maintained in the normal range in the remainder. Over the treatment period, patients had an increase in natural protein intake of 20-50% and gained 0-6.5 kg in bodyweight.

conclusionThese observations suggest that, in addition to short-term benefits for the acute treatment of hyperammonaemia, NCG may be effective and well tolerated as a long-term treatment in patients with severe PA and MMA, and that further prospective studies are warranted.

Indexed as

Metabolic decompensationMethylmalonic aciduriaN-carbamylglutamateOrganic aciduriasPropionic aciduria

Identifiers

PMID27489777
PMCPMC4949587
OpenAlexW2461810314

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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.