15-72686245-C-T

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBP6

The NM_001252678.2(BBS4):​c.-452C>T variant causes a 5 prime UTR premature start codon gain change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000637 in 1,413,270 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (no stars).

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000064 ( 0 hom. )

Consequence

BBS4
NM_001252678.2 5_prime_UTR_premature_start_codon_gain

Scores

2

Clinical Significance

Benign no assertion criteria provided B:1

Conservation

PhyloP100: -4.88
Variant links:
Genes affected
BBS4 (HGNC:969): (Bardet-Biedl syndrome 4) This gene is a member of the Bardet-Biedl syndrome (BBS) gene family. Bardet-Biedl syndrome is an autosomal recessive disorder characterized by severe pigmentary retinopathy, obesity, polydactyly, renal malformation and cognitive disability. The proteins encoded by BBS gene family members are structurally diverse. The similar phenotypes exhibited by mutations in BBS gene family members are likely due to the protein's shared roles in cilia formation and function. Many BBS proteins localize to the basal bodies, ciliary axonemes, and pericentriolar regions of cells. BBS proteins may also be involved in intracellular trafficking via microtubule-related transport. The protein encoded by this gene has sequence similarity to O-linked N-acetylglucosamine (O-GlcNAc) transferases in plants and archaebacteria and in human forms a multi-protein "BBSome" complex with seven other BBS proteins. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Mar 2016]

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.7).
BP6
Variant 15-72686245-C-T is Benign according to our data. Variant chr15-72686245-C-T is described in ClinVar as [Benign]. Clinvar id is 21737.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
BBS4NM_033028.5 linkuse as main transcriptc.18C>T p.Val6Val synonymous_variant 1/16 ENST00000268057.9 NP_149017.2 Q96RK4-1A0A0S2Z3A9

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
BBS4ENST00000268057.9 linkuse as main transcriptc.18C>T p.Val6Val synonymous_variant 1/161 NM_033028.5 ENSP00000268057.4 Q96RK4-1

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD3 exomes
AF:
0.00000567
AC:
1
AN:
176356
Hom.:
0
AF XY:
0.0000107
AC XY:
1
AN XY:
93824
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000136
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000637
AC:
9
AN:
1413270
Hom.:
0
Cov.:
31
AF XY:
0.00000859
AC XY:
6
AN XY:
698478
show subpopulations
Gnomad4 AFR exome
AF:
0.0000310
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000125
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000643
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
32
Bravo
AF:
0.00000378

ClinVar

Significance: Benign
Submissions summary: Benign:1
Revision: no assertion criteria provided
LINK: link

Submissions by phenotype

Bardet-Biedl syndrome Benign:1
Benign, no assertion criteria providedcurationGeneReviewsOct 13, 2009- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.70
CADD
Benign
1.4
DANN
Benign
0.93

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs113994187; hg19: chr15-72978586; API