LRRC8B

leucine rich repeat containing 8 VRAC subunit B, the group of Volume regulated anion channel subunits

Basic information

Region (hg38): 1:89524828-89597861

Links

ENSG00000197147 ∙ NCBI:23507 ∙ OMIM:612888 ∙ HGNC:30692 ∙ Uniprot:Q6P9F7 ∙ AlphaFold ∙ GenCC ∙ jax ∙ Sfari ∙ GnomAD ∙ Pubmed ∙ ClinVar

Phenotypes

GenCC

Source: genCC

No genCC data.

ClinVar

This is a list of variants' phenotypes submitted to ClinVar and linked to the LRRC8B gene.

Variants pathogenicity by type

Statistics on ClinVar variants can assist in determining whether a specific variant type in the LRRC8B gene is commonly pathogenic or not.

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.

Variant type	Pathogenic	Likely pathogenic	VUS	Likely benign	Benign	Sum
synonymous				1	3	4
missense			24	1	2	27
nonsense						0
start loss						0
frameshift						0
inframe indel						0
splice donor/acceptor (+/-2bp)						0
splice region						0
non coding						0
Total	0	0	24	2	5

Variants in LRRC8B

This is a list of pathogenic ClinVar variants found in the LRRC8B region.

You can filter this list by clicking the number of variants in the Variants pathogenicity by type table.

Position	Type	Phenotype	Significance	ClinVar
1-89582767-C-T			Benign (Aug 20, 2018)
1-89582768-G-A		not specified	Uncertain significance (Sep 17, 2021)
1-89582841-A-G		not specified	Uncertain significance (Nov 07, 2023)
1-89582849-G-A		not specified	Uncertain significance (Apr 06, 2023)
1-89582868-T-C		not specified	Uncertain significance (Jul 20, 2021)
1-89582895-A-C		not specified	Uncertain significance (Aug 21, 2023)
1-89582925-G-A		not specified	Uncertain significance (Jan 29, 2024)
1-89582972-G-A		not specified	Uncertain significance (May 20, 2024)
1-89583197-C-T		not specified	Uncertain significance (Jan 23, 2024)
1-89583201-C-A		not specified	Uncertain significance (May 03, 2023)
1-89583223-G-A			Benign (Dec 04, 2017)
1-89583311-C-T		not specified	Uncertain significance (Apr 12, 2022)
1-89583378-G-A		not specified	Uncertain significance (Sep 22, 2023)
1-89583512-G-A			Benign (Jan 19, 2018)
1-89583515-T-G		not specified	Uncertain significance (Sep 01, 2021)
1-89583529-G-A			Benign (Aug 20, 2018)
1-89583765-T-A		not specified	Uncertain significance (Mar 16, 2024)
1-89583939-A-G		not specified	Likely benign (Dec 03, 2021)
1-89583941-G-A		not specified	Uncertain significance (Dec 16, 2023)
1-89583942-G-A		not specified	Uncertain significance (May 20, 2024)
1-89584023-C-T		not specified	Uncertain significance (Mar 24, 2023)
1-89584046-A-C		not specified	Uncertain significance (Dec 19, 2022)
1-89584056-G-A			Benign (Dec 20, 2017)
1-89584119-A-G		not specified	Uncertain significance (Oct 05, 2023)
1-89584223-C-G		not specified	Uncertain significance (Mar 07, 2024)

GnomAD

Source: gnomAD

Gene	Type	Bio Type	Transcript	Coding Exons	Length
LRRC8B	protein_coding	protein_coding	ENST00000330947	2	73029

pLI Probability LOF Intolerant	pRec Probability LOF Recessive	Individuals with no LOFs	Individuals with Homozygous LOFs	Individuals with Heterozygous LOFs	Defined	p
0.996	0.00381	125714	0	23	125737	0.0000915

	Z-Score	Observed	Expected	Observed/Expected	Mutation Rate	Total Possible in Transcript
Missense	2.54	267	412	0.648	0.0000218	5265
Missense in Polyphen		72	170.56	0.42213		2251
Synonymous	0.0790	170	171	0.992	0.00000938	1587
Loss of Function	4.29	2	25.3	0.0792	0.00000127	345

LoF frequencies by population

Ethnicity	Sum of pLOFs	p
African & African-American	0.000356	0.000354
Ashkenazi Jewish	0.0000993	0.0000992
East Asian	0.000109	0.000109
Finnish	0.0000462	0.0000462
European (Non-Finnish)	0.0000620	0.0000615
Middle Eastern	0.000109	0.000109
South Asian	0.0000327	0.0000327
Other	0.000163	0.000163

dbNSFP

Source: dbNSFP

• Function: FUNCTION: Non-essential component of the volume-regulated anion channel (VRAC, also named VSOAC channel), an anion channel required to maintain a constant cell volume in response to extracellular or intracellular osmotic changes (PubMed:24790029, PubMed:26824658, PubMed:28193731). The VRAC channel conducts iodide better than chloride and can also conduct organic osmolytes like taurine. Channel activity requires LRRC8A plus at least one other family member (LRRC8B, LRRC8C, LRRC8D or LRRC8E); channel characteristics depend on the precise subunit composition (PubMed:24790029, PubMed:26824658, PubMed:28193731). {ECO:0000269|PubMed:24790029, ECO:0000269|PubMed:26824658, ECO:0000269|PubMed:28193731}.
• Pathway: Transport of small molecules;Miscellaneous transport and binding events (Consensus)

Intolerance Scores

• loftool: 0.492
• rvis_EVS: -1.35
• rvis_percentile_EVS: 4.58

Haploinsufficiency Scores

• pHI: 0.736
• hipred: Y
• hipred_score: 0.740
• ghis: 0.590

Essentials

• essential_gene_CRISPR: N
• essential_gene_CRISPR2: N
• gene_indispensability_pred: N
• gene_indispensability_score: 0.403

Gene Damage Prediction

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

Mouse Genome Informatics

• Gene name: Lrrc8b

Gene ontology

• Biological process: cell volume homeostasis;inorganic anion transport;transmembrane transport;anion transmembrane transport
• Cellular component: cytoplasm;endoplasmic reticulum membrane;plasma membrane;integral component of plasma membrane;ion channel complex
• Molecular function: volume-sensitive anion channel activity;protein binding