PBD2B
MCID: PRX064
MIFTS: 23

Peroxisome Biogenesis Disorder 2b (PBD2B)

Categories: Endocrine diseases, Eye diseases, Fetal diseases, Genetic diseases, Liver diseases, Mental diseases, Metabolic diseases, Nephrological diseases, Neuronal diseases, Rare diseases

Aliases & Classifications for Peroxisome Biogenesis Disorder 2b

MalaCards integrated aliases for Peroxisome Biogenesis Disorder 2b:

Name: Peroxisome Biogenesis Disorder 2b 57 74 13 72
Pbd2b 57 74

Characteristics:

OMIM:

57
Inheritance:
autosomal recessive


HPO:

32
peroxisome biogenesis disorder 2b:
Inheritance autosomal recessive inheritance


Classifications:



External Ids:

MeSH 44 D052919
UMLS 72 C3550234

Summaries for Peroxisome Biogenesis Disorder 2b

OMIM : 57 The overlapping phenotypes of neonatal adrenoleukodystrophy (NALD) and infantile Refsum disease (IRD) represent the milder manifestations of the Zellweger syndrome spectrum (ZSS) of peroxisome biogenesis disorders. The clinical course of patients with the NALD and IRD presentation is variable and may include developmental delay, hypotonia, liver dysfunction, sensorineural hearing loss, retinal dystrophy, and visual impairment. Children with the NALD presentation may reach their teens, and those with the IRD presentation may reach adulthood (summary by Waterham and Ebberink, 2012). For a complete phenotypic description and a discussion of genetic heterogeneity of PBD(NALD/IRD), see 601539. Individuals with mutations in the PEX5 gene have cells of complementation group 2 (CG2). For information on the history of PBD complementation groups, see 214100. (202370)

MalaCards based summary : Peroxisome Biogenesis Disorder 2b, is also known as pbd2b. An important gene associated with Peroxisome Biogenesis Disorder 2b is PEX5 (Peroxisomal Biogenesis Factor 5). Affiliated tissues include liver and bone, and related phenotypes are low-set ears and frontal bossing

UniProtKB/Swiss-Prot : 74 Peroxisome biogenesis disorder 2B: A peroxisome biogenesis disorder that includes neonatal adrenoleukodystrophy (NALD) and infantile Refsum disease (IRD), two milder manifestations of the Zellweger disease spectrum. The clinical course of patients with the NALD and IRD presentation is variable and may include developmental delay, hypotonia, liver dysfunction, sensorineural hearing loss, retinal dystrophy and vision impairment. Children with the NALD presentation may reach their teens, while patients with the IRD presentation may reach adulthood. The clinical conditions are often slowly progressive in particular with respect to loss of hearing and vision. The biochemical abnormalities include accumulation of phytanic acid, very long chain fatty acids (VLCFA), di- and trihydroxycholestanoic acid and pipecolic acid.

Symptoms & Phenotypes for Peroxisome Biogenesis Disorder 2b

Human phenotypes related to Peroxisome Biogenesis Disorder 2b:

32 (show all 17)
# Description HPO Frequency HPO Source Accession
1 low-set ears 32 HP:0000369
2 frontal bossing 32 HP:0002007
3 high palate 32 HP:0000218
4 intellectual disability 32 HP:0001249
5 seizures 32 HP:0001250
6 wide nasal bridge 32 HP:0000431
7 abnormal facial shape 32 HP:0001999
8 anteverted nares 32 HP:0000463
9 prominent forehead 32 HP:0011220
10 dolichocephaly 32 HP:0000268
11 high, narrow palate 32 HP:0002705
12 epicanthus 32 HP:0000286
13 high forehead 32 HP:0000348
14 adrenal insufficiency 32 HP:0000846
15 esotropia 32 HP:0000565
16 elevated circulating long chain fatty acid concentration 32 HP:0003455
17 polar cataract 32 HP:0010696

Symptoms via clinical synopsis from OMIM:

57
Head And Neck Ears:
low-set ears

Head And Neck Head:
prominent forehead
dolichocephaly
high forehead

Head And Neck Eyes:
esotropia
epicanthal folds
cataracts, neonatal polar

Head And Neck Face:
peculiar facies

Laboratory Abnormalities:
elevated long chain fatty acids caused by mutation in the peroxisome biogenesis factor 5 gene (pex5, )

Neurologic Central Nervous System:
seizures
mental retardation

Endocrine Features:
adrenal insufficiency

Head And Neck Nose:
anteverted nostrils
nasal bridge broad

Head And Neck Mouth:
palate high-arched

Clinical features from OMIM:

202370

Drugs & Therapeutics for Peroxisome Biogenesis Disorder 2b

Search Clinical Trials , NIH Clinical Center for Peroxisome Biogenesis Disorder 2b

Genetic Tests for Peroxisome Biogenesis Disorder 2b

Anatomical Context for Peroxisome Biogenesis Disorder 2b

MalaCards organs/tissues related to Peroxisome Biogenesis Disorder 2b:

41
Liver, Bone

Publications for Peroxisome Biogenesis Disorder 2b

Articles related to Peroxisome Biogenesis Disorder 2b:

# Title Authors PMID Year
1
Mutations in the PTS1 receptor gene, PXR1, define complementation group 2 of the peroxisome biogenesis disorders. 8 71
7719337 1995
2
Genetics and molecular basis of human peroxisome biogenesis disorders. 8
22871920 2012
3
Zellweger Spectrum Disorder 71
20301621 2003
4
Novel PEX1 mutations and genotype-phenotype correlations in Australasian peroxisome biogenesis disorder patients. 71
12402331 2002
5
Chromosome 13 locus, Pbd2, regulates bone density in mice. 38
11697793 2001

Variations for Peroxisome Biogenesis Disorder 2b

ClinVar genetic disease variations for Peroxisome Biogenesis Disorder 2b:

6
# Gene Variation Type Significance SNP ID GRCh37 Pos GRCh38 Pos
1 PEX5 NM_000319.4(PEX5): c.1554T> G (p.Asn518Lys) single nucleotide variant Pathogenic rs61752138 12:7362296-7362296 12:7209700-7209700
2 PEX5 NM_000319.4(PEX5): c.361G> T (p.Glu121Ter) single nucleotide variant Pathogenic/Likely pathogenic 12:7344209-7344209 12:7191613-7191613
3 PEX5 NM_000319.4(PEX5): c.1790G> A (p.Ser597Asn) single nucleotide variant Uncertain significance rs146567534 12:7362713-7362713 12:7210117-7210117
4 PEX5 NM_000319.4(PEX5): c.1612C> T (p.Arg538Cys) single nucleotide variant Uncertain significance 12:7362354-7362354 12:7209758-7209758
5 PEX5 NM_000319.4(PEX5): c.164G> T (p.Gly55Val) single nucleotide variant Uncertain significance 12:7343500-7343500 12:7190904-7190904
6 PEX5 NM_000319.4(PEX5): c.815T> C (p.Met272Thr) single nucleotide variant Benign/Likely benign rs76708142 12:7355269-7355269 12:7202673-7202673

UniProtKB/Swiss-Prot genetic disease variations for Peroxisome Biogenesis Disorder 2b:

74
# Symbol AA change Variation ID SNP ID
1 PEX5 p.Asn526Lys VAR_007543 rs61752138
2 PEX5 p.Ser600Trp VAR_031328

Expression for Peroxisome Biogenesis Disorder 2b

Search GEO for disease gene expression data for Peroxisome Biogenesis Disorder 2b.

Pathways for Peroxisome Biogenesis Disorder 2b

GO Terms for Peroxisome Biogenesis Disorder 2b

Sources for Peroxisome Biogenesis Disorder 2b

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