rs138921247

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.2416G>C​(p.Val806Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000603 in 1,614,078 control chromosomes in the GnomAD database, including 18 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 0.00068 ( 2 hom., cov: 33)
Exomes 𝑓: 0.00060 ( 16 hom. )

Consequence

ALMS1
NM_001378454.1 missense

Scores

13

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:7

Conservation

PhyloP100: -0.936

Publications

5 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=0.0031686723).
BP6
Variant 2-73448943-G-C is Benign according to our data. Variant chr2-73448943-G-C is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 376953.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BS1
Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.000683 (104/152252) while in subpopulation EAS AF = 0.018 (93/5162). AF 95% confidence interval is 0.0151. There are 2 homozygotes in GnomAd4. There are 64 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.
BS2
High Homozygotes in GnomAd4 at 2 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.2416G>Cp.Val806Leu
missense
Exon 8 of 23NP_001365383.1Q8TCU4-1
ALMS1
NM_015120.4
c.2416G>Cp.Val806Leu
missense
Exon 8 of 23NP_055935.4Q8TCU4

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
ALMS1
ENST00000613296.6
TSL:1 MANE Select
c.2416G>Cp.Val806Leu
missense
Exon 8 of 23ENSP00000482968.1Q8TCU4-1
ALMS1
ENST00000484298.5
TSL:1
c.2290G>Cp.Val764Leu
missense
Exon 7 of 22ENSP00000478155.1A0A087WTU9
ALMS1
ENST00000684548.1
c.2035G>Cp.Val679Leu
missense
Exon 6 of 21ENSP00000507421.1A0A804HJA5

Frequencies

GnomAD3 genomes
AF:
0.000684
AC:
104
AN:
152134
Hom.:
2
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.0000241
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0000655
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.0180
Gnomad SAS
AF:
0.00104
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000294
Gnomad OTH
AF:
0.000957
GnomAD2 exomes
AF:
0.00173
AC:
430
AN:
248984
AF XY:
0.00141
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.000199
Gnomad EAS exome
AF:
0.0232
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.000827
GnomAD4 exome
AF:
0.000595
AC:
870
AN:
1461826
Hom.:
16
Cov.:
40
AF XY:
0.000561
AC XY:
408
AN XY:
727228
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33476
American (AMR)
AF:
0.0000447
AC:
2
AN:
44720
Ashkenazi Jewish (ASJ)
AF:
0.0000765
AC:
2
AN:
26134
East Asian (EAS)
AF:
0.0205
AC:
814
AN:
39696
South Asian (SAS)
AF:
0.000104
AC:
9
AN:
86258
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53420
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5766
European-Non Finnish (NFE)
AF:
8.99e-7
AC:
1
AN:
1111962
Other (OTH)
AF:
0.000695
AC:
42
AN:
60394
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.493
Heterozygous variant carriers
0
74
147
221
294
368
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:
0.000683
AC:
104
AN:
152252
Hom.:
2
Cov.:
33
AF XY:
0.000860
AC XY:
64
AN XY:
74440
show subpopulations
African (AFR)
AF:
0.0000241
AC:
1
AN:
41550
American (AMR)
AF:
0.0000654
AC:
1
AN:
15294
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3468
East Asian (EAS)
AF:
0.0180
AC:
93
AN:
5162
South Asian (SAS)
AF:
0.00104
AC:
5
AN:
4826
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10618
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.0000294
AC:
2
AN:
68016
Other (OTH)
AF:
0.000947
AC:
2
AN:
2112
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.509
Heterozygous variant carriers
0
5
10
14
19
24
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Genome Hom
Variant carriers
0
4
8
12
16
20
<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:
0.000783
Hom.:
2
Bravo
AF:
0.000718
ExAC
AF:
0.00174
AC:
210
Asia WGS
AF:
0.00693
AC:
24
AN:
3478

ClinVar

ClinVar submissions
Significance:Benign/Likely benign
Revision:criteria provided, multiple submitters, no conflicts
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
-
3
not provided (3)
-
-
2
not specified (2)
-
-
1
Alstrom syndrome (1)
-
-
1
Cardiovascular phenotype (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.19
BayesDel_addAF
Benign
-0.49
T
BayesDel_noAF
Benign
-0.46
CADD
Benign
1.9
DANN
Benign
0.80
DEOGEN2
Benign
0.030
T
Eigen
Benign
-0.54
Eigen_PC
Benign
-0.74
FATHMM_MKL
Benign
0.069
N
LIST_S2
Benign
0.41
T
MetaRNN
Benign
0.0032
T
MetaSVM
Benign
-1.1
T
PhyloP100
-0.94
PrimateAI
Benign
0.29
T
Sift4G
Benign
0.15
T
Vest4
0.050
MVP
0.13
ClinPred
0.025
T
GERP RS
1.9
Varity_R
0.020
gMVP
0.045
Mutation Taster
=97/3
polymorphism

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: rs138921247; hg19: chr2-73676070; API