rs373331232

Variant summary

Our verdict is Pathogenic. The variant received 16 ACMG points: 16P and 0B. PVS1PP5_Very_Strong

The NM_006017.3(PROM1):​c.730C>T​(p.Arg244*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000168 in 1,606,988 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 Pathogenic (★★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000017 ( 0 hom. )

Consequence

PROM1
NM_006017.3 stop_gained

Scores

2
1
4

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:3

Conservation

PhyloP100: 0.906

Publications

6 publications found
Variant links:
Genes affected
PROM1 (HGNC:9454): (prominin 1) This gene encodes a pentaspan transmembrane glycoprotein. The protein localizes to membrane protrusions and is often expressed on adult stem cells, where it is thought to function in maintaining stem cell properties by suppressing differentiation. Mutations in this gene have been shown to result in retinitis pigmentosa and Stargardt disease. Expression of this gene is also associated with several types of cancer. This gene is expressed from at least five alternative promoters that are expressed in a tissue-dependent manner. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Mar 2009]
PROM1 Gene-Disease associations (from GenCC):
  • retinal macular dystrophy type 2
    Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae)
  • inherited retinal dystrophy
    Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
  • retinitis pigmentosa 41
    Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
  • cone-rod dystrophy 12
    Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
  • cone-rod dystrophy
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • retinitis pigmentosa
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • Stargardt disease
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 16 ACMG points.

PVS1
Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
PP5
Variant 4-16023380-G-A is Pathogenic according to our data. Variant chr4-16023380-G-A is described in ClinVar as Pathogenic. ClinVar VariationId is 438215.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
PROM1NM_006017.3 linkc.730C>T p.Arg244* stop_gained Exon 8 of 28 ENST00000447510.7 NP_006008.1 O43490-1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
PROM1ENST00000447510.7 linkc.730C>T p.Arg244* stop_gained Exon 8 of 28 1 NM_006017.3 ENSP00000415481.2 O43490-1

Frequencies

GnomAD3 genomes
AF:
0.0000132
AC:
2
AN:
152044
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000483
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
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:
0.00
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000167
AC:
4
AN:
239468
AF XY:
0.0000232
show subpopulations
Gnomad AFR exome
AF:
0.0000692
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000276
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000172
AC:
25
AN:
1454944
Hom.:
0
Cov.:
30
AF XY:
0.0000235
AC XY:
17
AN XY:
723048
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33380
American (AMR)
AF:
0.00
AC:
0
AN:
43924
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25926
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39516
South Asian (SAS)
AF:
0.00
AC:
0
AN:
84730
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53094
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5756
European-Non Finnish (NFE)
AF:
0.0000226
AC:
25
AN:
1108450
Other (OTH)
AF:
0.00
AC:
0
AN:
60168
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.485
Heterozygous variant carriers
0
1
3
4
6
7
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:
0.0000132
AC:
2
AN:
152044
Hom.:
0
Cov.:
32
AF XY:
0.0000135
AC XY:
1
AN XY:
74272
show subpopulations
African (AFR)
AF:
0.0000483
AC:
2
AN:
41382
American (AMR)
AF:
0.00
AC:
0
AN:
15260
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3466
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5186
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4820
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10604
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
68008
Other (OTH)
AF:
0.00
AC:
0
AN:
2090
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.425
Heterozygous variant carriers
0
1
1
2
2
3
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome 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
Alfa
AF:
0.0000147
Hom.:
0
Bravo
AF:
0.0000264
ESP6500AA
AF:
0.000245
AC:
1
ESP6500EA
AF:
0.00
AC:
0
ExAC
AF:
0.0000248
AC:
3

ClinVar

Significance: Pathogenic
Submissions summary: Pathogenic:3
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not provided Pathogenic:1
Oct 07, 2024
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Pathogenic
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change creates a premature translational stop signal (p.Arg244*) in the PROM1 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in PROM1 are known to be pathogenic (PMID: 17605048, 19718270, 24154662, 25474345). This variant is present in population databases (rs373331232, gnomAD 0.007%). This premature translational stop signal has been observed in individual(s) with autosomal recessive inherited retinal dystrophy (PMID: 24154662, 24763286, 32581362). ClinVar contains an entry for this variant (Variation ID: 438215). For these reasons, this variant has been classified as Pathogenic. -

Retinal dystrophy Pathogenic:1
Jan 01, 2015
NIHR Bioresource Rare Diseases, University of Cambridge
Significance:Pathogenic
Review Status:no assertion criteria provided
Collection Method:research

- -

Cone-rod dystrophy 12 Pathogenic:1
Jun 22, 2023
Institute of Medical Genetics and Genomics, Sir Ganga Ram Hospital
Significance:Pathogenic
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This heterozygous variant c.730C>T (p.Arg244Ter) has been identified in a proband with features suggestive of cone rod dystrophy in compound heterozygous state with c.1946C>T (Ser649Leu). This has been previously reported as pathogenic in PMID: 26702251 -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
0.50
D
BayesDel_noAF
Pathogenic
0.29
CADD
Pathogenic
35
DANN
Uncertain
1.0
Eigen
Benign
0.15
Eigen_PC
Benign
-0.18
FATHMM_MKL
Benign
0.084
N
PhyloP100
0.91
Vest4
0.82
GERP RS
3.8
Mutation Taster
=0/200
disease causing (ClinVar)

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.15
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: rs373331232; hg19: chr4-16025003; API