rs3820700

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The NM_001378454.1(ALMS1):​c.7724G>A​(p.Ser2575Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.138 in 1,613,854 control chromosomes in the GnomAD database, including 16,134 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.12 ( 1271 hom., cov: 32)
Exomes 𝑓: 0.14 ( 14863 hom. )

Consequence

ALMS1
NM_001378454.1 missense

Scores

5
9

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:7

Conservation

PhyloP100: 2.36
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]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.0017927587).
BP6
Variant 2-73489683-G-A is Benign according to our data. Variant chr2-73489683-G-A is described in ClinVar as [Benign]. Clinvar id is 383774.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BA1
GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.21 is higher than 0.05.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
ALMS1NM_001378454.1 linkc.7724G>A p.Ser2575Asn missense_variant Exon 10 of 23 ENST00000613296.6 NP_001365383.1
ALMS1NM_015120.4 linkc.7724G>A p.Ser2575Asn missense_variant Exon 10 of 23 NP_055935.4 Q8TCU4

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
ALMS1ENST00000613296.6 linkc.7724G>A p.Ser2575Asn missense_variant Exon 10 of 23 1 NM_001378454.1 ENSP00000482968.1 Q8TCU4-1

Frequencies

GnomAD3 genomes
AF:
0.125
AC:
18957
AN:
151956
Hom.:
1272
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.101
Gnomad AMI
AF:
0.0428
Gnomad AMR
AF:
0.0808
Gnomad ASJ
AF:
0.137
Gnomad EAS
AF:
0.221
Gnomad SAS
AF:
0.176
Gnomad FIN
AF:
0.149
Gnomad MID
AF:
0.140
Gnomad NFE
AF:
0.135
Gnomad OTH
AF:
0.117
GnomAD3 exomes
AF:
0.134
AC:
33514
AN:
249504
Hom.:
2502
AF XY:
0.139
AC XY:
18878
AN XY:
135370
show subpopulations
Gnomad AFR exome
AF:
0.101
Gnomad AMR exome
AF:
0.0523
Gnomad ASJ exome
AF:
0.135
Gnomad EAS exome
AF:
0.214
Gnomad SAS exome
AF:
0.169
Gnomad FIN exome
AF:
0.158
Gnomad NFE exome
AF:
0.137
Gnomad OTH exome
AF:
0.134
GnomAD4 exome
AF:
0.139
AC:
203585
AN:
1461778
Hom.:
14863
Cov.:
33
AF XY:
0.141
AC XY:
102416
AN XY:
727190
show subpopulations
Gnomad4 AFR exome
AF:
0.107
Gnomad4 AMR exome
AF:
0.0546
Gnomad4 ASJ exome
AF:
0.133
Gnomad4 EAS exome
AF:
0.240
Gnomad4 SAS exome
AF:
0.169
Gnomad4 FIN exome
AF:
0.154
Gnomad4 NFE exome
AF:
0.137
Gnomad4 OTH exome
AF:
0.133
GnomAD4 genome
AF:
0.125
AC:
18961
AN:
152076
Hom.:
1271
Cov.:
32
AF XY:
0.125
AC XY:
9296
AN XY:
74330
show subpopulations
Gnomad4 AFR
AF:
0.101
Gnomad4 AMR
AF:
0.0807
Gnomad4 ASJ
AF:
0.137
Gnomad4 EAS
AF:
0.221
Gnomad4 SAS
AF:
0.175
Gnomad4 FIN
AF:
0.149
Gnomad4 NFE
AF:
0.135
Gnomad4 OTH
AF:
0.122
Alfa
AF:
0.132
Hom.:
3375
Bravo
AF:
0.118
TwinsUK
AF:
0.144
AC:
535
ALSPAC
AF:
0.141
AC:
542
ESP6500AA
AF:
0.0982
AC:
376
ESP6500EA
AF:
0.130
AC:
1073
ExAC
AF:
0.138
AC:
16617
Asia WGS
AF:
0.182
AC:
631
AN:
3478
EpiCase
AF:
0.133
EpiControl
AF:
0.133

ClinVar

Significance: Benign
Submissions summary: Benign:7
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Alstrom syndrome Benign:3
Sep 16, 2020
Natera, Inc.
Significance: Benign
Review Status: no assertion criteria provided
Collection Method: clinical testing

- -

Feb 04, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Jul 14, 2021
Genome-Nilou Lab
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

not specified Benign:2
Mar 21, 2016
Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

p.Ser2574Asn in exon 10 of ALMS1: This variant is not expected to have clinical significance because it has been identified in 21.64% (1866/8622) of East Asian chromosomes by the Exome Aggregation Consortium (ExAC, http://exac.broadinstitut e.org; dbSNP rs3820700). -

Sep 23, 2016
GeneDx
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

not provided Benign:1
-
Breakthrough Genomics, Breakthrough Genomics
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: not provided

- -

Cardiovascular phenotype Benign:1
Dec 21, 2018
Ambry Genetics
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.28
BayesDel_addAF
Benign
-0.50
T
BayesDel_noAF
Benign
-0.34
CADD
Uncertain
25
DANN
Uncertain
1.0
DEOGEN2
Benign
0.033
T;.;.
Eigen
Uncertain
0.55
Eigen_PC
Uncertain
0.55
FATHMM_MKL
Uncertain
0.89
D
LIST_S2
Benign
0.77
T;T;T
MetaRNN
Benign
0.0018
T;T;T
MetaSVM
Benign
-0.97
T
PrimateAI
Benign
0.45
T
Sift4G
Uncertain
0.0050
D;D;D
Vest4
0.21
ClinPred
0.013
T
GERP RS
4.5
Varity_R
0.097
gMVP
0.082

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.010
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: rs3820700; hg19: chr2-73716810; COSMIC: COSV52506859; API