NM_024649.5:c.437G>T

Variant names:

• chr11-66515544-G-T
• rs759253107
• NM_024649.5:c.437G>T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_024649.5(BBS1):​c.437G>T​(p.Arg146Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R146Q) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 31)
• Consequence: BBS1 NM_024649.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.0960
• Publications: 1 publications found

Genes affected

BBS1 (HGNC:966): (Bardet-Biedl syndrome 1) Mutations in this gene have been observed in patients with the major form (type 1) of Bardet-Biedl syndrome. The encoded protein may play a role in eye, limb, cardiac and reproductive system development. [provided by RefSeq, Jul 2008]

BBS1 Gene-Disease associations (from GenCC):

• Bardet-Biedl syndrome 1

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, G2P, Myriad Women’s Health, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
• ciliopathy

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• Bardet-Biedl syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ENSG00000256349 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.111572206).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BBS1	NM_024649.5	c.437G>T	p.Arg146Leu	missense_variant	Exon 5 of 17	ENST00000318312.12	NP_078925.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
BBS1	ENST00000318312.12	c.437G>T	p.Arg146Leu	missense_variant	Exon 5 of 17	1	NM_024649.5	ENSP00000317469.7
ENSG00000256349	ENST00000419755.3	c.548G>T	p.Arg183Leu	missense_variant	Exon 5 of 17	2		ENSP00000398526.3

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 31

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.10
BayesDel_addAF	Uncertain	0.013	T
BayesDel_noAF	Benign	-0.22
CADD	Benign	3.5
DANN	Benign	0.81
DEOGEN2	Uncertain	0.77	.;D;.;.;D
Eigen	Benign	-1.0
Eigen_PC	Benign	-1.1
FATHMM_MKL	Uncertain	0.77	D
LIST_S2	Benign	0.35	T;T;T;T;T
M_CAP	Uncertain	0.13	D
MetaRNN	Benign	0.11	T;T;T;T;T
MetaSVM	Benign	-0.65	T
MutationAssessor	Benign	0.97	.;L;.;L;.
PhyloP100		0.096
PrimateAI	Benign	0.22	T
PROVEAN	Uncertain	-3.4	D;D;N;D;D
REVEL	Uncertain	0.29
Sift	Benign	0.25	T;T;T;T;T
Sift4G	Benign	0.10	T;T;T;T;D
Polyphen		0.0010	.;B;.;.;.
Vest4		0.33
MutPred		0.28		.;Loss of solvent accessibility (P = 0.0299);.;Loss of solvent accessibility (P = 0.0299);.;
MVP		0.47
MPC		0.19
ClinPred		0.070	T
GERP RS		-3.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.12
gMVP		0.33
Mutation Taster		=89/11	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs759253107; hg19: chr11-66283015;