rs767987000

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001378454.1(ALMS1):ā€‹c.9433A>Gā€‹(p.Ile3145Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000752 in 1,461,844 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/17 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (ā˜…ā˜…).

Frequency

Genomes: not found (cov: 32)
Exomes š‘“: 0.0000075 ( 0 hom. )

Consequence

ALMS1
NM_001378454.1 missense

Scores

15

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 0.355
Variant links:
Genes affected
ALMS1 (HGNC:428): (ALMS1 centrosome and basal body associated protein) This gene encodes a protein containing a large tandem-repeat domain as well as additional low complexity regions. The encoded protein functions in microtubule organization, particularly in the formation and maintanance of cilia. Mutations in this gene cause Alstrom syndrome. There is a pseudogene for this gene located adjacent in the same region of chromosome 2. Alternative splice variants have been described but their full length nature has not been determined. [provided by RefSeq, Apr 2014]

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.05925542).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
ALMS1NM_001378454.1 linkuse as main transcriptc.9433A>G p.Ile3145Val missense_variant 10/23 ENST00000613296.6 NP_001365383.1
ALMS1NM_015120.4 linkuse as main transcriptc.9436A>G p.Ile3146Val missense_variant 10/23 NP_055935.4

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
ALMS1ENST00000613296.6 linkuse as main transcriptc.9433A>G p.Ile3145Val missense_variant 10/231 NM_001378454.1 ENSP00000482968 P3Q8TCU4-1

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD3 exomes
AF:
0.00000401
AC:
1
AN:
249304
Hom.:
0
AF XY:
0.00000739
AC XY:
1
AN XY:
135254
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.0000290
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:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000752
AC:
11
AN:
1461844
Hom.:
0
Cov.:
33
AF XY:
0.00000413
AC XY:
3
AN XY:
727216
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.0000224
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000809
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
32
TwinsUK
AF:
0.00
AC:
0
ALSPAC
AF:
0.000259
AC:
1

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Alstrom syndrome Uncertain:2
Uncertain significance, criteria provided, single submitterclinical testingFulgent Genetics, Fulgent GeneticsMay 16, 2022- -
Uncertain significance, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpAug 18, 2021This sequence change replaces isoleucine with valine at codon 3146 of the ALMS1 protein (p.Ile3146Val). The isoleucine residue is weakly conserved and there is a small physicochemical difference between isoleucine and valine. This variant is not present in population databases (ExAC no frequency). This variant has not been reported in the literature in individuals affected with ALMS1-related conditions. Experimental studies and prediction algorithms are not available or were not evaluated, and the functional significance of this variant is currently unknown. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.093
BayesDel_addAF
Benign
-0.24
T
BayesDel_noAF
Benign
-0.49
CADD
Benign
8.6
DANN
Benign
0.92
DEOGEN2
Benign
0.013
T;.;.
Eigen
Benign
-0.80
Eigen_PC
Benign
-0.81
FATHMM_MKL
Benign
0.016
N
LIST_S2
Benign
0.51
T;T;T
M_CAP
Benign
0.0018
T
MetaRNN
Benign
0.059
T;T;T
MetaSVM
Benign
-0.95
T
MutationTaster
Benign
1.0
N;N
PrimateAI
Benign
0.34
T
Sift4G
Benign
0.86
T;T;T
Vest4
0.051
MVP
0.16
ClinPred
0.015
T
GERP RS
0.43
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.1
Varity_R
0.025
gMVP
0.014

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: rs767987000; hg19: chr2-73718519; API