rs368397994

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 0P and 3B. BP4_ModerateBP7

The NM_178013.4(PRIMA1):​c.228A>T​(p.Pro76Pro) variant causes a splice region, synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000175 in 1,029,270 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00024 ( 0 hom., cov: 0)
Exomes 𝑓: 0.0000071 ( 0 hom. )

Consequence

PRIMA1
NM_178013.4 splice_region, synonymous

Scores

2
Splicing: ADA: 0.1875
2

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.10

Publications

1 publications found
Variant links:
Genes affected
PRIMA1 (HGNC:18319): (proline rich membrane anchor 1) The product of this gene functions to organize acetylcholinesterase (AChE) into tetramers, and to anchor AChE at neural cell membranes. [provided by RefSeq, Nov 2008]

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -3 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.39).
BP7
Synonymous conserved (PhyloP=1.11 with no splicing effect.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
PRIMA1NM_178013.4 linkc.228A>T p.Pro76Pro splice_region_variant, synonymous_variant Exon 3 of 5 ENST00000393140.6 NP_821092.1
PRIMA1XM_011536456.3 linkc.228A>T p.Pro76Pro splice_region_variant, synonymous_variant Exon 3 of 5 XP_011534758.1
PRIMA1XM_047430966.1 linkc.228A>T p.Pro76Pro splice_region_variant, synonymous_variant Exon 3 of 5 XP_047286922.1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
PRIMA1ENST00000393140.6 linkc.228A>T p.Pro76Pro splice_region_variant, synonymous_variant Exon 3 of 5 1 NM_178013.4 ENSP00000376848.1
PRIMA1ENST00000393143.5 linkc.228A>T p.Pro76Pro splice_region_variant, synonymous_variant Exon 2 of 4 1 ENSP00000376851.1
PRIMA1ENST00000316227.3 linkc.228A>T p.Pro76Pro splice_region_variant, synonymous_variant Exon 2 of 5 1 ENSP00000320948.3
PRIMA1ENST00000477603.5 linkn.228A>T splice_region_variant, non_coding_transcript_exon_variant Exon 3 of 6 1 ENSP00000434370.1

Frequencies

GnomAD3 genomes
AF:
0.000244
AC:
11
AN:
45088
Hom.:
0
Cov.:
0
show subpopulations
Gnomad AFR
AF:
0.000984
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:
0.0000391
AC:
5
AN:
127928
AF XY:
0.0000417
show subpopulations
Gnomad AFR exome
AF:
0.000621
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:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000711
AC:
7
AN:
984182
Hom.:
0
Cov.:
24
AF XY:
0.0000104
AC XY:
5
AN XY:
479096
show subpopulations
African (AFR)
AF:
0.000327
AC:
6
AN:
18356
American (AMR)
AF:
0.00
AC:
0
AN:
11688
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
9914
East Asian (EAS)
AF:
0.00
AC:
0
AN:
9092
South Asian (SAS)
AF:
0.00
AC:
0
AN:
37964
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
23680
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
2066
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
837884
Other (OTH)
AF:
0.0000298
AC:
1
AN:
33538
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.468
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

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:
0.000244
AC:
11
AN:
45088
Hom.:
0
Cov.:
0
AF XY:
0.000142
AC XY:
3
AN XY:
21140
show subpopulations
African (AFR)
AF:
0.000984
AC:
11
AN:
11178
American (AMR)
AF:
0.00
AC:
0
AN:
3274
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
1160
East Asian (EAS)
AF:
0.00
AC:
0
AN:
1294
South Asian (SAS)
AF:
0.00
AC:
0
AN:
1422
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
2080
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
82
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
23704
Other (OTH)
AF:
0.00
AC:
0
AN:
616
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.552
Heterozygous variant carriers
0
1
2
2
3
4
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:
0.00
Hom.:
0

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Familial sleep-related hypermotor epilepsy Uncertain:1
Jun 03, 2022
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change affects codon 76 of the PRIMA1 mRNA. It is a 'silent' change, meaning that it does not change the encoded amino acid sequence of the PRIMA1 protein. It affects a nucleotide within the consensus splice site. This variant is present in population databases (rs368397994, gnomAD 0.06%). This variant has not been reported in the literature in individuals affected with PRIMA1-related conditions. ClinVar contains an entry for this variant (Variation ID: 581545). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.39
CADD
Benign
16
DANN
Benign
0.84
PhyloP100
1.1

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Benign
0.19
dbscSNV1_RF
Benign
0.49
SpliceAI score (max)
0.10
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: rs368397994; hg19: chr14-94245523; API