rs947005337

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PP3_StrongPP5

The NM_015450.3(POT1):​c.233T>C​(p.Ile78Thr) variant causes a missense change. The variant allele was found at a frequency of 0.00000871 in 1,607,628 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I78V) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 33)
Exomes 𝑓: 0.0000082 ( 0 hom. )

Consequence

POT1
NM_015450.3 missense

Scores

10
8

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:9U:1O:1

Conservation

PhyloP100: 5.99

Publications

9 publications found
Variant links:
Genes affected
POT1 (HGNC:17284): (protection of telomeres 1) This gene is a member of the telombin family and encodes a nuclear protein involved in telomere maintenance. Specifically, this protein functions as a member of a multi-protein complex that binds to the TTAGGG repeats of telomeres, regulating telomere length and protecting chromosome ends from illegitimate recombination, catastrophic chromosome instability, and abnormal chromosome segregation. Increased transcriptional expression of this gene is associated with stomach carcinogenesis and its progression. Alternatively spliced transcript variants have been described. [provided by RefSeq, Jul 2008]
POT1 Gene-Disease associations (from GenCC):
  • pulmonary fibrosis and/or bone marrow failure syndrome, telomere-related, 8
    Inheritance: AD Classification: STRONG, LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)
  • tumor predisposition syndrome 3
    Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
  • glioma susceptibility 9
    Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
  • thyroid gland carcinoma
    Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
  • cerebroretinal microangiopathy with calcifications and cysts 3
    Inheritance: AR Classification: LIMITED Submitted by: G2P, Ambry Genetics

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

PP3
MetaRNN computational evidence supports a deleterious effect, 0.945
PP5
Variant 7-124870933-A-G is Pathogenic according to our data. Variant chr7-124870933-A-G is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 475073.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_015450.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
POT1
NM_015450.3
MANE Select
c.233T>Cp.Ile78Thr
missense
Exon 7 of 19NP_056265.2Q9NUX5-1
POT1
NM_001042594.2
c.-138-7293T>C
intron
N/ANP_001036059.1A8MTK3
POT1
NR_003102.2
n.676T>C
non_coding_transcript_exon
Exon 7 of 20

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
POT1
ENST00000357628.8
TSL:2 MANE Select
c.233T>Cp.Ile78Thr
missense
Exon 7 of 19ENSP00000350249.3Q9NUX5-1
POT1
ENST00000607932.5
TSL:1
n.233T>C
non_coding_transcript_exon
Exon 3 of 14ENSP00000476506.1Q5MJ34
POT1
ENST00000608057.5
TSL:1
n.233T>C
non_coding_transcript_exon
Exon 3 of 16ENSP00000476371.1Q5MJ35

Frequencies

GnomAD3 genomes
AF:
0.0000131
AC:
2
AN:
152138
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.000288
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.00
Gnomad OTH
AF:
0.000478
GnomAD2 exomes
AF:
0.0000162
AC:
4
AN:
246852
AF XY:
0.00000749
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.000303
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00000891
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000824
AC:
12
AN:
1455490
Hom.:
0
Cov.:
29
AF XY:
0.00000967
AC XY:
7
AN XY:
724026
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33210
American (AMR)
AF:
0.00
AC:
0
AN:
44076
Ashkenazi Jewish (ASJ)
AF:
0.000232
AC:
6
AN:
25892
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39392
South Asian (SAS)
AF:
0.00
AC:
0
AN:
85168
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53186
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5720
European-Non Finnish (NFE)
AF:
0.00000361
AC:
4
AN:
1108800
Other (OTH)
AF:
0.0000333
AC:
2
AN:
60046
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.467
Heterozygous variant carriers
0
1
2
3
4
5
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<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:
0.0000131
AC:
2
AN:
152138
Hom.:
0
Cov.:
33
AF XY:
0.0000135
AC XY:
1
AN XY:
74312
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
41454
American (AMR)
AF:
0.00
AC:
0
AN:
15280
Ashkenazi Jewish (ASJ)
AF:
0.000288
AC:
1
AN:
3472
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5202
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4832
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10614
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
67964
Other (OTH)
AF:
0.000478
AC:
1
AN:
2092
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.425
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
Alfa
AF:
0.0000451
Hom.:
0
Bravo
AF:
0.0000151

ClinVar

ClinVar submissions
Significance:Conflicting classifications of pathogenicity
Revision:criteria provided, conflicting classifications
View on ClinVar
Pathogenic
VUS
Benign
Condition
4
-
-
Tumor predisposition syndrome 3 (4)
3
-
-
not provided (3)
1
-
-
Hereditary cancer-predisposing syndrome (1)
1
-
-
Long telomere syndrome (1)
-
1
-
not specified (1)
-
-
-
Melanoma, cutaneous malignant, susceptibility to, 1 (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.78
BayesDel_addAF
Pathogenic
0.30
D
BayesDel_noAF
Pathogenic
0.19
CADD
Pathogenic
26
DANN
Uncertain
1.0
DEOGEN2
Pathogenic
0.94
D
Eigen
Pathogenic
0.80
Eigen_PC
Pathogenic
0.75
FATHMM_MKL
Uncertain
0.93
D
LIST_S2
Uncertain
0.91
D
M_CAP
Uncertain
0.17
D
MetaRNN
Pathogenic
0.94
D
MetaSVM
Uncertain
-0.044
T
MutationAssessor
Uncertain
2.8
M
PhyloP100
6.0
PrimateAI
Uncertain
0.65
T
PROVEAN
Pathogenic
-4.7
D
REVEL
Pathogenic
0.69
Sift
Uncertain
0.0010
D
Sift4G
Pathogenic
0.0
D
Polyphen
1.0
D
Vest4
0.83
MutPred
0.88
Gain of methylation at R80 (P = 0.0588)
MVP
0.77
MPC
2.2
ClinPred
0.92
D
GERP RS
4.7
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.86
gMVP
0.95
Mutation Taster
=24/76
disease causing

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: rs947005337; hg19: chr7-124510987; COSMIC: COSV62935384; COSMIC: COSV62935384; API