D-bifunctional Protein Deficiency

Description

D-bifunctional protein deficiency is a disorder of peroxisomal fatty acid beta-oxidation. See also peroxisomal acyl-CoA oxidase deficiency (OMIM ), caused by mutation in the ACOX1 gene (OMIM ) on chromosome 17q25. The clinical manifestations of these 2 deficiencies are similar to those of disorders of peroxisomal assembly, including X-linked adrenoleukodystrophy (ALD ), Zellweger cerebrohepatorenal syndrome (see {214100}) and neonatal adrenoleukodystrophy (NALD; see {601539}) (Watkins et al., 1995).DBP deficiency has been classified into 3 subtypes depending upon the deficient enzyme activity. Type I is a deficiency of both 2-enoyl-CoA hydratase and 3-hydroxyacyl-CoA dehydrogenase; type II is a deficiency of hydratase activity alone; and type III is a deficiency of dehydrogenase activity alone. Virtually all patients with types I, II, and III have a severe phenotype characterized by infantile-onset of hypotonia, seizures, and abnormal facial features, and most die before age 2 years. McMillan et al. (2012) proposed a type IV deficiency on the basis of less severe features; these patients have a phenotype reminiscent of Perrault syndrome (PRLTS1 ). Pierce et al. (2010) noted that Perrault syndrome and DBP deficiency overlap clinically and suggested that DBP deficiency may be underdiagnosed.

Clinical Features

Top most frequent phenotypes and symptoms related to D-bifunctional Protein Deficiency

  • Seizures
  • Global developmental delay
  • Generalized hypotonia
  • Hearing impairment
  • Hypertelorism
  • Nystagmus
  • Failure to thrive
  • Micrognathia
  • Strabismus
  • Abnormal facial shape

And another 73 symptoms. If you need more information about this disease we can help you.

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Incidence and onset information

— Currently we don't have prevalence information about this disease (Not enough data available about incidence and published cases.)
No data available about the known clinical features onset.

Alternative names

D-bifunctional Protein Deficiency Is also known as peroxisomal bifunctional enzyme deficiency, dbp deficiency, 17-beta-hydroxysteroid dehydrogenase iv deficiency, pbfe deficiency.

Researches and researchers

Currently, we don't have any information about doctors, researches or researchers related to this disease. Please contact us if you would like to appear here.


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D-bifunctional Protein Deficiency Recommended genes panels

Panel Name, Specifity and genes Tested/covered
MitoMetĀ®Plus aCGH Analysis.

By Baylor Miraca Genetics Laboratories (United States).

RGS9, RHO, GRK1, RLBP1, RNASEL, BCS1L, RP1, RP2, RP9, RPE65, RPGR, RPL35A, MRPL3, RPS14, RS1, SAG, SARDH, SCO2, SCP2, SDHB , (...)

View the complete list with 612 more genes
Specificity
1 %
Genes
50 %
GeneAware Complete Panel Version 2 (Female).

By Baylor Miraca Genetics Laboratories (United States).

RMRP, BCS1L, SACS, BLM, SGCA, SGCB, SGCG, SGSH, SLC12A6, SLC17A5, SLC22A5, SLC25A13, SLC25A15, SLC26A2, SLC35A3, SLC7A7, SMN1, SMPD1, BTD, BTK , (...)

View the complete list with 139 more genes
Specificity
1 %
Genes
50 %
GeneAware Complete Panel Version 2 (Male).

By Baylor Miraca Genetics Laboratories (United States).

RMRP, BCS1L, SACS, BLM, SGCA, SGCB, SGCG, SGSH, SLC12A6, SLC17A5, SLC22A5, SLC25A13, SLC25A15, SLC26A2, SLC35A3, SLC7A7, SMN1, SMPD1, BTD, TGM1 , (...)

View the complete list with 129 more genes
Specificity
1 %
Genes
50 %
Hearing Loss Advanced Sequencing and CNV Evaluation.

By Athena Diagnostics Inc (United States).

BCS1L, ROR1, SALL1, SEMA3E, SIX1, SIX5, SLC12A1, SLC19A2, SLC22A4, SNAI2, SMPX, SOX10, TBX1, TCOF1, TECTA, TFAP2A, TIMM8A, TJP2, TMPRSS3, USH1C , (...)

View the complete list with 149 more genes
Specificity
1 %
Genes
50 %
NGS Hearing Loss Panel.

By Greenwood Genetic Center Diagnostic Laboratories Greenwood Genetic Center (United States).

SIX1, SNAI2, SMPX, SOX10, TECTA, TIMM8A, TJP2, TMPRSS3, USH1C, USH2A, CLRN1, TSPEAR, WFS1, ESPN, CDH23, CACNA1D, ACTG1, PCDH15, USH1G, WHRN , (...)

View the complete list with 70 more genes
Specificity
2 %
Genes
50 %
Peroxisomal Beta-Oxidation Defects NGS Panel.

By Johns Hopkins DNA Diagnostic Laboratory Johns Hopkins Hospital (United States).

SCP2, ACOX1, HSD17B4
Specificity
34 %
Genes
50 %
Zelweger Spectrum Disorder and Beta-Oxidation Defect NGS Panel.

By Johns Hopkins DNA Diagnostic Laboratory Johns Hopkins Hospital (United States).

SCP2, ACOX1, PEX26, DNM1L, HSD17B4, PEX1, PEX10, PEX12, PEX13, PEX14, PEX16, PEX3, PEX6, PEX19, PEX2, PEX5
Specificity
7 %
Genes
50 %
Peroxisomal Disorders Comprehensive NGS Panel.

By Johns Hopkins DNA Diagnostic Laboratory Johns Hopkins Hospital (United States).

SCP2, ACOX1, CAT, PEX26, DNM1L, AGPS, AGXT, GNPAT, AMACR, HSD17B4, TRIM37, PEX1, PEX10, PEX12, PEX13, PEX14, PEX16, PEX3, PEX6, PEX7 , (...)

View the complete list with 4 more genes
Specificity
5 %
Genes
50 %

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Sources and references

You can check the following sources for additional information.

ORPHANET OMIM Rare Disease Symptoms Checker

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