ABCB7

ATP binding cassette subfamily B member 7, the group of ATP binding cassette subfamily B

Basic information

Region (hg38): X:75051048-75156732

Previous symbols: [ "ABC7" ]

Links

ENSG00000131269

∙ NCBI:22 ∙ OMIM:300135 ∙ HGNC:48 ∙ Uniprot:O75027 ∙ AlphaFold ∙ GenCC ∙ jax ∙ Sfari ∙ GnomAD ∙ Pubmed ∙ ClinVar

Phenotypes

GenCC

Source: genCC

X-linked sideroblastic anemia with ataxia (Moderate), mode of inheritance: XL
X-linked sideroblastic anemia with ataxia (Strong), mode of inheritance: XL
X-linked sideroblastic anemia with ataxia (Strong), mode of inheritance: XLR
X-linked sideroblastic anemia with ataxia (Supportive), mode of inheritance: XL
X-linked sideroblastic anemia with ataxia (Strong), mode of inheritance: XL
X-linked sideroblastic anemia with ataxia (Definitive), mode of inheritance: XL
mitochondrial disease (Moderate), mode of inheritance: XL

Clinical Genomic Database

Source: CGD

Condition	Inheritance	Intervention Categories	Intervention/Rationale	Manifestation Categories	References
Spinocerebellar ataxia, x-linked 6, with or without sideroblastic anemia	XL	General	Genetic knowledge may be beneficial related to issues such as selection of optimal supportive care, informed medical decision-making, prognostic considerations, and avoidance of unnecessary testing	Hematologic; Neurologic	4045952; 10196363; 20301496; 22398176

ClinVar

This is a list of variants' phenotypes submitted to ClinVar and linked to the ABCB7 gene.

not_provided (198 variants)
Inborn_genetic_diseases (37 variants)
X-linked_sideroblastic_anemia_with_ataxia (27 variants)
not_specified (23 variants)
ABCB7-related_disorder (12 variants)
Sideroblastic_Anemia_and_Ataxia (7 variants)
Spinocerebellar_ataxia,_X-linked (1 variants)
Epilepsy (1 variants)
Mitochondrial_disease (1 variants)
Intellectual_disability (1 variants)

Variants pathogenicity by type

Statistics on ClinVar variants can assist in determining whether a specific variant type in the ABCB7 gene is commonly pathogenic or not. These statistics are base on transcript: NM_001271696.3. Only rare variants are included in the table.

In the table, we include only reliable ClinVar variants with their consequences to MANE Select, Mane Plus Clinical transcripts, or transcripts with TSL equals 1. Click the count to view the source variants.

Warning: slight differences between displayed counts and the number of variants in ClinVar may occur, primarily due to (1) the application of a different transcript and/or consequence by our variant effect predictor or (2) differences in clinical significance: we classify Benign/Likely benign variants as Likely benign and Pathogenic/Likely pathogenic variants as Likely pathogenic.

Effect	PathogenicP	Likely pathogenicLP	VUSVUS	Likely benignLB	BenignB	Sum
synonymous			4 clinvar	40 clinvar	12 clinvar	56
missense	5 clinvar	6 clinvar	90 clinvar	14 clinvar	11 clinvar	126
nonsense						0
start loss						0
frameshift						0
splice donor/acceptor (+/-2bp)			1 clinvar	1 clinvar		2
Total	5	6	95	55	23

Highest pathogenic variant AF is 0.000042365

Loading clinvar variants...

GnomAD

Source: gnomAD

Gene	Type	Bio Type	Transcript	Coding Exons	Length
ABCB7	protein_coding	protein_coding	ENST00000253577	16	103453

pLI Probability LOF Intolerant	pRec Probability LOF Recessive	Individuals with no LOFs	Individuals with Homozygous LOFs	Individuals with Heterozygous LOFs	Defined	p
1.00	0.0000619	122732	702	1208	124642	0.00769

	Z-Score	Observed	Expected	Observed/Expected	Mutation Rate	Total Possible in Transcript
Missense	2.90	145	282	0.514	0.0000199	4888
Missense in Polyphen		18	109.18	0.16487		1975
Synonymous	-0.0958	105	104	1.01	0.00000762	1507
Loss of Function	4.86	0	27.5	0.00	0.00000210	461

LoF frequencies by population

Ethnicity	Sum of pLOFs	p
African & African-American	0.0115	0.0110
Ashkenazi Jewish	0.0111	0.00831
East Asian	0.0000724	0.0000546
Finnish	0.00352	0.00261
European (Non-Finnish)	0.0169	0.0122
Middle Eastern	0.0000724	0.0000546
South Asian	0.00355	0.00222
Other	0.0124	0.00923

dbNSFP

Source: dbNSFP

Function: FUNCTION: Could be involved in the transport of heme from the mitochondria to the cytosol. Plays a central role in the maturation of cytosolic iron-sulfur (Fe/S) cluster-containing proteins.;
Disease: DISEASE: Anemia, sideroblastic, spinocerebellar ataxia (ASAT) [MIM:301310]: A X-linked recessive disorder characterized by an infantile to early childhood onset of non-progressive cerebellar ataxia and mild anemia, with hypochromia and microcytosis. {ECO:0000269|PubMed:10196363, ECO:0000269|PubMed:11050011, ECO:0000269|PubMed:11843825, ECO:0000269|PubMed:22398176}. Note=The disease is caused by mutations affecting the gene represented in this entry.;
Pathway: ABC transporters - Homo sapiens (human);Transport of small molecules;ABC-family proteins mediated transport;Mitochondrial ABC transporters (Consensus)

Recessive Scores

pRec: 0.517

Intolerance Scores

loftool: 0.0561
rvis_EVS: 0.86
rvis_percentile_EVS: 88.69

Haploinsufficiency Scores

pHI: 0.417
hipred: Y
hipred_score: 0.628
ghis: 0.417

Essentials

essential_gene_CRISPR: N
essential_gene_CRISPR2: E
essential_gene_gene_trap: E
gene_indispensability_pred: N
gene_indispensability_score: 0.169

Gene Damage Prediction

	All	Recessive	Dominant
Mendelian	Medium	Medium	Medium
Primary Immunodeficiency	Medium	Medium	Medium
Cancer	Medium	Medium	Medium

Mouse Genome Informatics

Gene name: Abcb7
Phenotype: embryo phenotype; liver/biliary system phenotype; mortality/aging (the observable characteristics related to the ability of a mammalian organism to live and age that are manifested throughout development and life span); cardiovascular system phenotype (the observable morphological and physiological characteristics of the mammalian heart, blood vessels, or circulatory system that are manifested through development and lifespan); homeostasis/metabolism phenotype; growth/size/body region phenotype; cellular phenotype;

Gene ontology

Biological process: cellular iron ion homeostasis;heme transport;transmembrane transport
Cellular component: mitochondrial inner membrane;integral component of membrane
Molecular function: ATP binding;heme transporter activity;ATPase activity, coupled to transmembrane movement of substances