chr2-169479555-T-A

Variant summary

Our verdict is Pathogenic. Variant got 14 ACMG points: 14P and 0B. PVS1PS1_ModeratePM2PP5_Moderate

The NM_152384.3(BBS5):​c.2T>A​(p.Met1?) variant causes a start lost change. The variant allele was found at a frequency of 0.00000479 in 1,461,838 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★).

Frequency

Genomes: not found (cov: 33)
Exomes 𝑓: 0.0000048 ( 1 hom. )

Consequence

BBS5
NM_152384.3 start_lost

Scores

4
7
5

Clinical Significance

Pathogenic criteria provided, single submitter P:1

Conservation

PhyloP100: 6.05
Variant links:
Genes affected
BBS5 (HGNC:970): (Bardet-Biedl syndrome 5) This gene encodes a protein that has been directly linked to Bardet-Biedl syndrome. The primary features of this syndrome include retinal dystrophy, obesity, polydactyly, renal abnormalities and learning disabilities. Experimentation in non-human eukaryotes suggests that this gene is expressed in ciliated cells and that it is required for the formation of cilia. Alternate transcriptional splice variants have been observed but have not been fully characterized. [provided by RefSeq, Jul 2008]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 14 ACMG points.

PVS1
Start lost variant, no new inframe start found.
PS1
Another start lost variant in NM_152384.3 (BBS5) was described as [Pathogenic] in Lovd
PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 2-169479555-T-A is Pathogenic according to our data. Variant chr2-169479555-T-A is described in ClinVar as [Pathogenic]. Clinvar id is 812118.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr2-169479555-T-A is described in Lovd as [Likely_pathogenic].

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
BBS5NM_152384.3 linkuse as main transcriptc.2T>A p.Met1? start_lost 1/12 ENST00000295240.8 NP_689597.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
BBS5ENST00000295240.8 linkuse as main transcriptc.2T>A p.Met1? start_lost 1/121 NM_152384.3 ENSP00000295240 P1Q8N3I7-1
BBS5ENST00000392663.6 linkuse as main transcriptc.2T>A p.Met1? start_lost 1/111 ENSP00000376431 Q8N3I7-2
BBS5ENST00000469980.1 linkuse as main transcriptn.76T>A non_coding_transcript_exon_variant 1/24
BBS5ENST00000443151.1 linkuse as main transcriptc.2T>A p.Met1? start_lost, NMD_transcript_variant 1/65 ENSP00000406182

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD3 exomes
AF:
0.0000120
AC:
3
AN:
249784
Hom.:
0
AF XY:
0.0000222
AC XY:
3
AN XY:
135168
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:
0.0000980
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000479
AC:
7
AN:
1461838
Hom.:
1
Cov.:
34
AF XY:
0.00000688
AC XY:
5
AN XY:
727224
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000812
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
33
ExAC
AF:
0.0000165
AC:
2

ClinVar

Significance: Pathogenic
Submissions summary: Pathogenic:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Bardet-Biedl syndrome 5 Pathogenic:1
Pathogenic, criteria provided, single submitterclinical testingCentre for Genomic Medicine, Manchester, Central Manchester University HospitalsFeb 01, 2019- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
0.24
D
BayesDel_noAF
Pathogenic
0.31
CADD
Uncertain
23
DANN
Uncertain
0.99
DEOGEN2
Benign
0.10
T;.;.
Eigen
Benign
0.11
Eigen_PC
Uncertain
0.26
FATHMM_MKL
Uncertain
0.91
D
LIST_S2
Uncertain
0.90
D;D;D
M_CAP
Pathogenic
0.81
D
MetaRNN
Pathogenic
0.99
D;D;D
MetaSVM
Benign
-0.43
T
MutationTaster
Benign
1.0
D;D;D
PROVEAN
Benign
-0.12
N;N;N
REVEL
Uncertain
0.45
Sift
Uncertain
0.0020
D;D;D
Sift4G
Uncertain
0.022
D;D;D
Polyphen
0.0080
B;B;.
Vest4
0.94
MutPred
0.95
Gain of helix (P = 0.027);Gain of helix (P = 0.027);Gain of helix (P = 0.027);
MVP
0.95
ClinPred
0.91
D
GERP RS
6.0
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.79
gMVP
0.48

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.020
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: rs767822498; hg19: chr2-170336065; API