rs61741524

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_001378454.1(ALMS1):​c.11821G>A​(p.Gly3941Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000852 in 1,614,176 control chromosomes in the GnomAD database, including 16 homozygotes. 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 Benign (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G3941C) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0039 ( 8 hom., cov: 32)
Exomes 𝑓: 0.00053 ( 8 hom. )

Consequence

ALMS1
NM_001378454.1 missense

Scores

14

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:16

Conservation

PhyloP100: 0.0570

Publications

3 publications found
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]
ALMS1 Gene-Disease associations (from GenCC):
  • Alstrom syndrome
    Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, PanelApp Australia, G2P, Orphanet, Genomics England PanelApp

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.0047307312).
BP6
Variant 2-73600830-G-A is Benign according to our data. Variant chr2-73600830-G-A is described in ClinVar as Benign. ClinVar VariationId is 194868.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BS1
Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00391 (595/152316) while in subpopulation AFR AF = 0.0124 (514/41582). AF 95% confidence interval is 0.0115. There are 8 homozygotes in GnomAd4. There are 306 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.
BS2
High Homozygotes in GnomAd4 at 8 AR gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
ALMS1NM_001378454.1 linkc.11821G>A p.Gly3941Ser missense_variant Exon 18 of 23 ENST00000613296.6 NP_001365383.1
ALMS1NM_015120.4 linkc.11821G>A p.Gly3941Ser missense_variant Exon 18 of 23 NP_055935.4 Q8TCU4

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
ALMS1ENST00000613296.6 linkc.11821G>A p.Gly3941Ser missense_variant Exon 18 of 23 1 NM_001378454.1 ENSP00000482968.1 Q8TCU4-1

Frequencies

GnomAD3 genomes
AF:
0.00391
AC:
595
AN:
152198
Hom.:
8
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0124
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00353
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00166
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000132
Gnomad OTH
AF:
0.00478
GnomAD2 exomes
AF:
0.00115
AC:
289
AN:
251190
AF XY:
0.00107
show subpopulations
Gnomad AFR exome
AF:
0.0124
Gnomad AMR exome
AF:
0.00107
Gnomad ASJ exome
AF:
0.000794
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000792
Gnomad OTH exome
AF:
0.000816
GnomAD4 exome
AF:
0.000534
AC:
780
AN:
1461860
Hom.:
8
Cov.:
31
AF XY:
0.000546
AC XY:
397
AN XY:
727236
show subpopulations
African (AFR)
AF:
0.0132
AC:
443
AN:
33478
American (AMR)
AF:
0.00116
AC:
52
AN:
44724
Ashkenazi Jewish (ASJ)
AF:
0.000727
AC:
19
AN:
26136
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39698
South Asian (SAS)
AF:
0.00111
AC:
96
AN:
86252
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53420
Middle Eastern (MID)
AF:
0.000520
AC:
3
AN:
5768
European-Non Finnish (NFE)
AF:
0.0000908
AC:
101
AN:
1111990
Other (OTH)
AF:
0.00109
AC:
66
AN:
60394
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.420
Heterozygous variant carriers
0
38
76
115
153
191
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Exome Hom
Variant carriers
0
20
40
60
80
100
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.00391
AC:
595
AN:
152316
Hom.:
8
Cov.:
32
AF XY:
0.00411
AC XY:
306
AN XY:
74470
show subpopulations
African (AFR)
AF:
0.0124
AC:
514
AN:
41582
American (AMR)
AF:
0.00353
AC:
54
AN:
15308
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5172
South Asian (SAS)
AF:
0.00166
AC:
8
AN:
4822
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10616
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.000132
AC:
9
AN:
68028
Other (OTH)
AF:
0.00473
AC:
10
AN:
2112
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.501
Heterozygous variant carriers
0
30
59
89
118
148
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Genome Hom
Variant carriers
0
10
20
30
40
50
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.00235
Hom.:
2
Bravo
AF:
0.00467
ESP6500AA
AF:
0.00953
AC:
42
ESP6500EA
AF:
0.00
AC:
0
ExAC
AF:
0.00137
AC:
166
EpiCase
AF:
0.0000545
EpiControl
AF:
0.000119

ClinVar

Significance: Benign
Submissions summary: Benign:16
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not specified Benign:6
May 29, 2018
Women's Health and Genetics/Laboratory Corporation of America, LabCorp
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

Variant summary: ALMS1 c.11818G>A (p.Gly3940Ser, alternative name c.11824G>A) results in a non-conservative amino acid change in the encoded protein sequence. Four of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.0014 in 277116 control chromosomes, predominantly within the African subpopulation at a frequency of 0.013 in the gnomAD database, including 4 homozygotes. The observed variant frequency within African control individuals is approximately 5.8 fold above the estimated maximal expected allele frequency for a pathogenic variant in ALMS1 causing Cardiomyopathy phenotype (0.0022), strongly suggesting that the variant is a benign polymorphism found primarily in populations of African origin. c.11818G>A has been reported in the literature in patients with clinical features of Alstrom syndrome. But this report does not provide unequivocal conclusions about association of the variant with cardiomyopathy or with Alstrom syndrome and is listed among a series of SNV's that were deemed as being unlikely to be pathogenic by the authors. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Three clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 and all laboratories classified the variant as benign/likely benign. Based on the evidence outlined above, the variant was classified as Benign. -

Aug 27, 2014
Eurofins Ntd Llc (ga)
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

-
Genome Diagnostics Laboratory, University Medical Center Utrecht
Significance:Benign
Review Status:no assertion criteria provided
Collection Method:clinical testing

- -

Dec 21, 2017
Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

p.Gly3940Ser in exon 18 of ALMS1: This variant is not expected to have clinical significance because it has been identified in 1.30% (309/24020) of African chro mosomes including 4 homozygotes by the Genome Aggregation Database (gnomAD, http ://gnomAD.broadinstitute.org; dbSNP rs61741524). ACMG/AMP criteria applied: BA1 . -

Nov 16, 2021
Genetic Services Laboratory, University of Chicago
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

-
Clinical Genetics, Academic Medical Center
Significance:Benign
Review Status:no assertion criteria provided
Collection Method:clinical testing

- -

not provided Benign:4
Jun 05, 2018
GeneDx
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

-
Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center
Significance:Likely benign
Review Status:no assertion criteria provided
Collection Method:clinical testing

- -

-
Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)
Significance:Likely benign
Review Status:no assertion criteria provided
Collection Method:clinical testing

- -

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

- -

Alstrom syndrome Benign:4
Dec 09, 2019
Natera, Inc.
Significance:Benign
Review Status:no assertion criteria provided
Collection Method:clinical testing

- -

Feb 03, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

-
Clinical Genomics, Uppaluri K&H Personalized Medicine Clinic
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:research

Potent mutations in ALMS1 are associated with a rare condition called Alstrom syndrome. It can cause excessive eating, insulin resistance. However, no evidence is found to ascertain the role of rs61741524 in Alstrom syndrome yet. -

Sep 16, 2024
ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Monogenic diabetes Benign:1
Feb 15, 2019
Personalized Diabetes Medicine Program, University of Maryland School of Medicine
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:research

ACMG criteria: BP4 (9 predictors, Revel score 0.031), BA1 (1.3% in gnomAD African) , BP1, BS2 (4 homozygotes in gnomAD African)= benign -

Cardiovascular phenotype Benign:1
Jan 26, 2019
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
0.068
BayesDel_addAF
Benign
-0.54
T
BayesDel_noAF
Benign
-0.54
CADD
Benign
0.019
DANN
Benign
0.28
DEOGEN2
Benign
0.0051
T;.
Eigen
Benign
-2.0
Eigen_PC
Benign
-1.9
FATHMM_MKL
Benign
0.0010
N
LIST_S2
Benign
0.40
T;T
MetaRNN
Benign
0.0047
T;T
MetaSVM
Benign
-0.94
T
PhyloP100
0.057
PrimateAI
Benign
0.27
T
Sift4G
Benign
0.71
T;T
Vest4
0.11
MVP
0.076
ClinPred
0.0010
T
GERP RS
-3.9
Varity_R
0.020
gMVP
0.038
Mutation Taster
=100/0
polymorphism

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

Other links and lift over

dbSNP: rs61741524; hg19: chr2-73827957; API