Evidence map›Paper›PMID 27033733›Full record

ArticleMolecular genetics and metabolism2016

Outcomes of cases with 3-methylcrotonyl-CoA carboxylase (3-MCC) deficiency - Report from the Inborn Errors of Metabolism Information System.

RaeLynn Forsyth, Catherine Walsh Vockley, Mathew J Edick, Cynthia A Cameron, Sally J Hiner, Susan A Berry, Jerry Vockley, Georgianne L Arnold, Inborn Errors of Metabolism Collaborative

Abstract read
In one paragraph

Article in Molecular genetics and metabolism, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
–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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

19 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Immune Dysregulation in Branched Chain Organic Acidemias.Journal of inherited metabolic disease · 2026
    Review
  3. Article
  4. Article
  5. Data-driven consideration of genetic disorders for global genomic newborn screening programs.Genetics in medicine : official journal of the American College of Medical Genetics · 2025
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. A Case of Consanguinity.Global pediatric health · 2022
    Article
  16. Foundation of the Newborn Screening Translational Research Network and its tools for research.Genetics in medicine : official journal of the American College of Medical Genetics · 2019
    Review
  17. Article
  18. Long-term follow-up in newborn screening: the role of collaboration.Genetics in medicine : official journal of the American College of Medical Genetics · 2016
    Article
  19. 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

9 authors.

RaeLynn ForsythUniversity of Pittsburgh School of Medicine, Pittsburgh, PA, United States.
Catherine Walsh VockleyChildren's Hospital of Pittsburgh of UPMC, Department of Pediatrics, Pittsburgh, PA, United States.
Mathew J EdickMichigan Public Health Institute, Center for Translational Genetics, Okemos, MI, United States.
Cynthia A CameronMichigan Public Health Institute, Center for Translational Genetics, Okemos, MI, United States.
Sally J HinerMichigan Public Health Institute, Public Health Services, Okemos, MI, United States.
Susan A BerryUniversity of Minnesota, Department of Pediatrics, Minneapolis, MN, United States.
Jerry VockleyUniversity of Pittsburgh, School of Medicine, Department of Pediatrics, Graduate School of Public Health, Department of Human Genetics, Pittsburgh, PA, United States.
Georgianne L ArnoldUniversity of Pittsburgh School of Medicine, Department of Pediatrics, Pittsburgh, PA, United States. Electronic address: Glarnold2757@gmail.com.
Inborn Errors of Metabolism Collaborative

Funding

Collaborative Defining the Natural History of Inborn errors of MetabolismR01HD069039 · NICHD · MICHIGAN PUBLIC HEALTH INSTITUTE · PI BERRY, SUSAN A., CAMERON, CYNTHIA A · 2011 to 2015
$4.3M
NICHD NIH HHS 5R01HD069039NICHD NIH HHS HHSN275201300011CNICHD NIH HHS R01 HD069039
6 · The paper itself

Abstract

introduction3-Methyl crotonyl CoA carboxylase (3MCC) deficiency is an inborn error of leucine metabolism whose detection was increased with the advent of expanded newborn screening. While most NBS-identified infants appear clinically normal, prior studies suggest a possible increased risk for developmental or metabolic abnormalities. As yet, no predictive markers are known that can identify children at risk for biochemical or developmental abnormalities.

methodAll available 3-MCC cases diagnosed by newborn screening in the Inborn Errors of Metabolism Information System (IBEM-IS) were reviewed for markers that might be predictive of outcome.

resultsA limited number of cases were identified with traditional biochemical symptoms including acidosis, hyperammonemia or lactic acidosis, and 15% of those with available developmental information had recorded developmental disabilities not clearly attributable to other causes. There was no correlation between newborn screening (NBS) C5OH level and presence of metabolic, newborn, later-life or developmental abnormalities in these cases. DISCUSSION: This sample, obtained from the IBEM-IS database, attempts to avoid some of the ascertainment bias present in retrospective studies. An increase in developmental abnormalities and in traditionally described metabolic symptoms remains apparent, although no specific biochemical markers appear predictive of outcome. The role that prevention of fasting plays in outcome cannot be ascertained. These data suggest that C5OH level found on newborn screening by itself is not sufficient for diagnostic or predictive purposes.

Indexed as

Acidosis, LacticCarbon-Carbon LigasesDatabases, FactualDevelopmental DisabilitiesHumansInfantInfant, NewbornNeonatal ScreeningPrognosisRetrospective StudiesUrea Cycle Disorders, InbornCarbon-Carbon Ligases3-MCC DeficiencyDatabaseNewborn ScreeningOutcomesSymptoms

Identifiers

PMID27033733
PMCPMC5540133

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Registered trials

None linked

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.