rs41291187

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.1871A>G​(p.His624Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0206 in 1,614,026 control chromosomes in the GnomAD database, including 423 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 (★★). Synonymous variant affecting the same amino acid position (i.e. H624H) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.016 ( 24 hom., cov: 32)
Exomes 𝑓: 0.021 ( 399 hom. )

Consequence

ALMS1
NM_001378454.1 missense

Scores

13

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:12

Conservation

PhyloP100: -0.281

Publications

12 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, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), ClinGen, Orphanet

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=0.00374794).
BP6
Variant 2-73448398-A-G is Benign according to our data. Variant chr2-73448398-A-G is described in ClinVar as Benign. ClinVar VariationId is 240984.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BS1
Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.0158 (2412/152256) while in subpopulation NFE AF = 0.0261 (1774/67984). AF 95% confidence interval is 0.0251. There are 24 homozygotes in GnomAd4. There are 1163 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.
BS2
High Homozygotes in GnomAd4 at 24 AR 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.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
ALMS1
NM_001378454.1
MANE Select
c.1871A>Gp.His624Arg
missense
Exon 8 of 23NP_001365383.1Q8TCU4-1
ALMS1
NM_015120.4
c.1871A>Gp.His624Arg
missense
Exon 8 of 23NP_055935.4Q8TCU4

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
ALMS1
ENST00000613296.6
TSL:1 MANE Select
c.1871A>Gp.His624Arg
missense
Exon 8 of 23ENSP00000482968.1Q8TCU4-1
ALMS1
ENST00000484298.5
TSL:1
c.1745A>Gp.His582Arg
missense
Exon 7 of 22ENSP00000478155.1A0A087WTU9
ALMS1
ENST00000684548.1
c.1490A>Gp.His497Arg
missense
Exon 6 of 21ENSP00000507421.1A0A804HJA5

Frequencies

GnomAD3 genomes
AF:
0.0159
AC:
2413
AN:
152138
Hom.:
24
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00420
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0106
Gnomad ASJ
AF:
0.0110
Gnomad EAS
AF:
0.000193
Gnomad SAS
AF:
0.00290
Gnomad FIN
AF:
0.0200
Gnomad MID
AF:
0.0190
Gnomad NFE
AF:
0.0261
Gnomad OTH
AF:
0.0153
GnomAD2 exomes
AF:
0.0169
AC:
4208
AN:
249146
AF XY:
0.0164
show subpopulations
Gnomad AFR exome
AF:
0.00484
Gnomad AMR exome
AF:
0.00898
Gnomad ASJ exome
AF:
0.00656
Gnomad EAS exome
AF:
0.0000556
Gnomad FIN exome
AF:
0.0178
Gnomad NFE exome
AF:
0.0279
Gnomad OTH exome
AF:
0.0175
GnomAD4 exome
AF:
0.0211
AC:
30821
AN:
1461770
Hom.:
399
Cov.:
58
AF XY:
0.0204
AC XY:
14849
AN XY:
727194
show subpopulations
African (AFR)
AF:
0.00305
AC:
102
AN:
33470
American (AMR)
AF:
0.00997
AC:
446
AN:
44716
Ashkenazi Jewish (ASJ)
AF:
0.00758
AC:
198
AN:
26130
East Asian (EAS)
AF:
0.0000252
AC:
1
AN:
39698
South Asian (SAS)
AF:
0.00328
AC:
283
AN:
86258
European-Finnish (FIN)
AF:
0.0188
AC:
1006
AN:
53408
Middle Eastern (MID)
AF:
0.0133
AC:
77
AN:
5768
European-Non Finnish (NFE)
AF:
0.0248
AC:
27554
AN:
1111926
Other (OTH)
AF:
0.0191
AC:
1154
AN:
60396
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.475
Heterozygous variant carriers
0
1973
3946
5918
7891
9864
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Exome Hom
Variant carriers
0
948
1896
2844
3792
4740
<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:
0.0158
AC:
2412
AN:
152256
Hom.:
24
Cov.:
32
AF XY:
0.0156
AC XY:
1163
AN XY:
74448
show subpopulations
African (AFR)
AF:
0.00419
AC:
174
AN:
41570
American (AMR)
AF:
0.0106
AC:
162
AN:
15298
Ashkenazi Jewish (ASJ)
AF:
0.0110
AC:
38
AN:
3468
East Asian (EAS)
AF:
0.000193
AC:
1
AN:
5174
South Asian (SAS)
AF:
0.00290
AC:
14
AN:
4826
European-Finnish (FIN)
AF:
0.0200
AC:
212
AN:
10616
Middle Eastern (MID)
AF:
0.0204
AC:
6
AN:
294
European-Non Finnish (NFE)
AF:
0.0261
AC:
1774
AN:
67984
Other (OTH)
AF:
0.0147
AC:
31
AN:
2114
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.504
Heterozygous variant carriers
0
120
240
359
479
599
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Genome Hom
Variant carriers
0
32
64
96
128
160
<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:
0.0220
Hom.:
71
Bravo
AF:
0.0145
TwinsUK
AF:
0.0205
AC:
76
ALSPAC
AF:
0.0218
AC:
84
ESP6500AA
AF:
0.00402
AC:
15
ESP6500EA
AF:
0.0255
AC:
209
ExAC
AF:
0.0190
AC:
2291
Asia WGS
AF:
0.00231
AC:
8
AN:
3478

ClinVar

ClinVar submissions
Significance:Benign
Revision:criteria provided, multiple submitters, no conflicts
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
-
4
not provided (4)
-
-
3
Alstrom syndrome (3)
-
-
3
not specified (3)
-
-
1
Cardiovascular phenotype (1)
-
-
1
Monogenic diabetes (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.083
BayesDel_addAF
Benign
-0.55
T
BayesDel_noAF
Benign
-0.54
CADD
Benign
0.94
DANN
Benign
0.31
DEOGEN2
Benign
0.014
T
Eigen
Benign
-1.3
Eigen_PC
Benign
-1.4
FATHMM_MKL
Benign
0.055
N
LIST_S2
Benign
0.33
T
MetaRNN
Benign
0.0037
T
MetaSVM
Benign
-1.0
T
PhyloP100
-0.28
PrimateAI
Benign
0.26
T
Sift4G
Benign
0.34
T
Vest4
0.029
ClinPred
0.00091
T
GERP RS
-2.5
Varity_R
0.029
gMVP
0.055
Mutation Taster
=99/1
polymorphism (auto)

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

Other links and lift over

dbSNP: rs41291187; hg19: chr2-73675525; API