rs142558799

Positions:

Variant summary

Our verdict is Benign. Variant got -7 ACMG points: 2P and 9B. PM2BP4_StrongBP6BS1

The NM_001378454.1(ALMS1):c.10892G>A(p.Arg3631His) variant causes a missense change. The variant allele was found at a frequency of 0.000159 in 1,614,058 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00061 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00011 ( 0 hom. )

Consequence

ALMS1
NM_001378454.1 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:7B:3

Conservation

PhyloP100: 5.32

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -7 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.023827434).

BP6

Variant 2-73572769-G-A is Benign according to our data. Variant chr2-73572769-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 390222.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=2, Uncertain_significance=5}.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000611 (93/152242) while in subpopulation AFR AF= 0.00166 (69/41538). AF 95% confidence interval is 0.00135. There are 0 homozygotes in gnomad4. There are 49 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ALMS1	NM_001378454.1 linkuse as main transcript	c.10892G>A	p.Arg3631His	missense_variant	16/23	ENST00000613296.6	NP_001365383.1
ALMS1	NM_015120.4 linkuse as main transcript	c.10895G>A	p.Arg3632His	missense_variant	16/23		NP_055935.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ALMS1	ENST00000613296.6 linkuse as main transcript	c.10892G>A	p.Arg3631His	missense_variant	16/23	1	NM_001378454.1	ENSP00000482968	P3	Q8TCU4-1

Frequencies

GnomAD3 genomes

AF:

0.000611

AC:

AN:

152124

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00167

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00137

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.000955

GnomAD3 exomes

AF:

0.000241

AC:

AN:

249204

Hom.:

AF XY:

0.000237

AC XY:

AN XY:

135172

show subpopulations

Gnomad AFR exome

AF:

0.00207

Gnomad AMR exome

AF:

0.000464

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000796

Gnomad OTH exome

AF:

0.000331

GnomAD4 exome

AF:

0.000112

AC:

164

AN:

1461816

Hom.:

Cov.:

AF XY:

0.000109

AC XY:

AN XY:

727202

show subpopulations

Gnomad4 AFR exome

AF:

0.00206

Gnomad4 AMR exome

AF:

0.000425

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000348

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000486

Gnomad4 OTH exome

AF:

0.000281

GnomAD4 genome

AF:

0.000611

AC:

AN:

152242

Hom.:

Cov.:

AF XY:

0.000658

AC XY:

AN XY:

74434

show subpopulations

Gnomad4 AFR

AF:

0.00166

Gnomad4 AMR

AF:

0.00137

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.000945

Alfa

AF:

0.000167

Hom.:

Bravo

AF:

0.000933

ESP6500AA

AF:

0.00178

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000281

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000593

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:7Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:3

Uncertain significance, criteria provided, single submitter	clinical testing	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	May 29, 2018	Variant summary: ALMS1 c.10889G>A (p.Arg3630His, alternative name c.10895G>A) results in a non-conservative amino acid change in the encoded protein sequence. Three of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 0.00028 in 276814 control chromosomes. This frequency is not higher than expected for a pathogenic variant in ALMS1 causing Cardiomyopathy (0.00028 vs 0.0022), allowing no conclusion about variant significance. To our knowledge, no occurrence of c.10889G>A in individuals affected with Cardiomyopathy and no experimental evidence demonstrating its impact on protein function have been reported. Two clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation and both classified the variant as uncertain significance. Based on the evidence outlined above, the variant was classified as uncertain significance. -
Uncertain significance, criteria provided, single submitter	clinical testing	Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	Dec 21, 2017	Variant classified as Uncertain Significance - Favor Benign. The p.Arg3632His va riant in ALMS1 gene has not been previously reported in individuals with hearing loss or Alstrom syndrome, but has been identified in several populations by the Genome Aggregation Database with the highest frequency of 0.21%(51/24014) of Af rican chromosomes (gnomAD, http://gnomad.broadinstitute.org; dbSNP rs142558799). This variant has also been reported in an affected individual of unspecified ph enotypes in ClinVar (Variation ID: 390222). Computational prediction tools and c onservation analysis do not provide strong support for or against an impact to t he protein. In summary, while the clinical significance of the p.Arg3630His vari ant is uncertain, the frequency data indicate that it is more likely to be benig n. ACMG/AMP criteria applied: BS1_supporting. -
Uncertain significance, criteria provided, single submitter	clinical testing	Genetic Services Laboratory, University of Chicago	Nov 16, 2021	- -

not provided

Uncertain:3

Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Aug 26, 2024	Has not been previously published as pathogenic or benign to our knowledge; In silico analysis supports that this missense variant has a deleterious effect on protein structure/function -
Uncertain significance, no assertion criteria provided	clinical testing	Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)	-	- -
Uncertain significance, no assertion criteria provided	clinical testing	Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center	-	- -

Alstrom syndrome

Uncertain:1Benign:2

Likely benign, no assertion criteria provided	clinical testing	Natera, Inc.	Jun 05, 2020	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Center for Genomics, Ann and Robert H. Lurie Children's Hospital of Chicago	Mar 30, 2021	ALMS1 NM_015120.4 exon 16 p.Arg3630His (c.10889G>A): This variant has not been reported in the literature and is present in 0.2% (51/24014) of African alleles in the Genome Aggregation Database (http://gnomad-old.broadinstitute.org/variant/2-73799896-G-A). Evolutionary conservation and computational predictive tools suggest that this variant may impact the protein. However, the variant amino acid Histidine (His) is present in two species (dolphin, killer whale). In summary, data on this variant is insufficient for disease classification. Therefore, the clinical significance of this variant is uncertain. -
Likely benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 28, 2024	- -

Cardiovascular phenotype

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

May 09, 2021

This alteration is classified as likely 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

0.16

BayesDel_addAF

Benign

-0.11

BayesDel_noAF

Uncertain

0.060

CADD

Uncertain

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.19

T;.;.

Eigen

Uncertain

0.49

Eigen_PC

Uncertain

0.50

FATHMM_MKL

Uncertain

0.95

LIST_S2

Benign

0.82

T;T;T

M_CAP

Benign

0.0044

MetaRNN

Benign

0.024

T;T;T

MetaSVM

Benign

-1.0

MutationTaster

Benign

0.61

D;D

PrimateAI

Benign

0.32

Sift4G

Pathogenic

0.0

D;D;D

Vest4

0.34

MVP

0.51

ClinPred

0.14

GERP RS

4.6

Varity_R

0.11

gMVP

0.15

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over