rs77555300

Variant names:

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.6553C>T(p.Pro2185Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0018 in 1,614,006 control chromosomes in the GnomAD database, including 48 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 Likely benign (★★).

Frequency

Genomes: 𝑓 0.0099 ( 29 hom., cov: 32)

Exomes 𝑓: 0.00096 ( 19 hom. )

Consequence

ALMS1
NM_001378454.1 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:11

Conservation

PhyloP100: -0.561

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, Unknown Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Orphanet, Labcorp Genetics (formerly Invitae), Genomics England PanelApp, ClinGen

ALMS1 links:

Genome browser will be placed here

new If you want to explore the variant's impact on the transcript NM_001378454.1, check out the Mutation Effect Viewer. This is especially useful for frameshift variants or if you want to visualize the effect of exon loss / intron retention.

ACMG classification

Classification was made for transcript

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

BP4

Computational evidence support a benign effect (MetaRNN=0.002175182).

BP6

Variant 2-73453080-C-T is Benign according to our data. Variant chr2-73453080-C-T is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 241009.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 = 0.00992 (1510/152290) while in subpopulation AFR AF = 0.0341 (1417/41574). AF 95% confidence interval is 0.0326. There are 29 homozygotes in GnomAd4. There are 715 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAd4 at 29 AR,Unknown gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001378454.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ALMS1	NM_001378454.1	MANE Select	c.6553C>T	p.Pro2185Ser	missense	Exon 8 of 23	NP_001365383.1	Q8TCU4-1
	ALMS1	NM_015120.4		c.6553C>T	p.Pro2185Ser	missense	Exon 8 of 23	NP_055935.4	Q8TCU4

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
ALMS1	ENST00000613296.6	TSL:1 MANE Select	c.6553C>T	p.Pro2185Ser	missense	Exon 8 of 23	ENSP00000482968.1	Q8TCU4-1
ALMS1	ENST00000484298.5	TSL:1	c.6427C>T	p.Pro2143Ser	missense	Exon 7 of 22	ENSP00000478155.1	A0A087WTU9
ALMS1	ENST00000423048.5	TSL:1	n.1384C>T		non_coding_transcript_exon	Exon 1 of 9	ENSP00000399833.1	H7C1D9

Frequencies

GnomAD3 genomes

AF:

0.00990

AC:

1507

AN:

152172

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0341

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00432

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00633

Gnomad NFE

AF:

0.000103

Gnomad OTH

AF:

0.00860

GnomAD2 exomes

AF:

0.00252

AC:

626

AN:

248690

AF XY:

0.00197

show subpopulations

Gnomad AFR exome

AF:

0.0344

Gnomad AMR exome

AF:

0.00177

Gnomad ASJ exome

AF:

0.000199

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000151

Gnomad OTH exome

AF:

0.000995

GnomAD4 exome

AF:

0.000955

AC:

1396

AN:

1461716

Hom.:

Cov.:

AF XY:

0.000855

AC XY:

622

AN XY:

727140

show subpopulations

African (AFR)

AF:

0.0327

AC:

1094

AN:

33476

American (AMR)

AF:

0.00217

AC:

AN:

44708

Ashkenazi Jewish (ASJ)

AF:

0.000115

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39682

South Asian (SAS)

AF:

0.000325

AC:

AN:

86242

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53346

Middle Eastern (MID)

AF:

0.00121

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000477

AC:

AN:

1111968

Other (OTH)

AF:

0.00189

AC:

114

AN:

60392

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

181

271

362

452

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

114

152

190

<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:

0.00992

AC:

1510

AN:

152290

Hom.:

Cov.:

AF XY:

0.00960

AC XY:

715

AN XY:

74472

show subpopulations

African (AFR)

AF:

0.0341

AC:

1417

AN:

41574

American (AMR)

AF:

0.00432

AC:

AN:

15286

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5170

South Asian (SAS)

AF:

0.00

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00680

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000103

AC:

AN:

68028

Other (OTH)

AF:

0.00851

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.502

Heterozygous variant carriers

147

220

294

367

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

100

<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:

0.00365

Hom.:

Bravo

AF:

0.0112

Asia WGS

AF:

0.000866

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000593

ClinVar

ClinVar submissions

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Alstrom syndrome (4)

not specified (4)

Cardiovascular phenotype (1)

Monogenic diabetes (1)

not provided (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.090

BayesDel_addAF

Benign

-0.62

BayesDel_noAF

Benign

-0.63

CADD

Benign

0.069

(source)

DANN

Benign

0.52

DEOGEN2

Benign

0.032

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.3

FATHMM_MKL

Benign

0.015

LIST_S2

Benign

0.54

MetaRNN

Benign

0.0022

MetaSVM

Benign

-1.0

PhyloP100

-0.56

PrimateAI

Benign

0.22

Sift4G

Benign

0.35

Varity_R

0.016

gMVP

0.068

Mutation Taster

=98/2

polymorphism

(source)

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over