14-93721527-C-T

Position:

chr14-93721527-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_178013.4(PRIMA1):c.379G>A(p.Glu127Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000155 in 1,613,408 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000016 ( 0 hom. )

Consequence

PRIMA1
NM_178013.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.97

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]

PRIMA1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.2998063).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PRIMA1	NM_178013.4 linkuse as main transcript	c.379G>A	p.Glu127Lys	missense_variant	5/5	ENST00000393140.6	NP_821092.1
PRIMA1	XM_011536456.3 linkuse as main transcript	c.379G>A	p.Glu127Lys	missense_variant	5/5		XP_011534758.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PRIMA1	ENST00000393140.6 linkuse as main transcript	c.379G>A	p.Glu127Lys	missense_variant	5/5	1	NM_178013.4	ENSP00000376848	P1	Q86XR5-1
PRIMA1	ENST00000393143.5 linkuse as main transcript	c.379G>A	p.Glu127Lys	missense_variant	4/4	1		ENSP00000376851	P1	Q86XR5-1
PRIMA1	ENST00000316227.3 linkuse as main transcript	c.*175G>A		3_prime_UTR_variant	5/5	1		ENSP00000320948		Q86XR5-2
PRIMA1	ENST00000477603.5 linkuse as main transcript	c.*175G>A		3_prime_UTR_variant, NMD_transcript_variant	6/6	1		ENSP00000434370		Q86XR5-2

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

152016

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

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

GnomAD3 exomes

AF:

0.0000239

AC:

AN:

250938

Hom.:

AF XY:

0.0000221

AC XY:

AN XY:

135644

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000164

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.0000164

AC:

AN:

1461392

Hom.:

Cov.:

AF XY:

0.0000206

AC XY:

AN XY:

727016

show subpopulations

Gnomad4 AFR exome

AF:

0.0000896

Gnomad4 AMR exome

AF:

0.0000895

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000139

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000180

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.00000658

AC:

AN:

152016

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74234

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000859

Hom.:

Bravo

AF:

0.0000302

ExAC

AF:

0.0000247

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Sleep-related hypermotor epilepsy

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Aug 31, 2022

This sequence change replaces glutamic acid, which is acidic and polar, with lysine, which is basic and polar, at codon 127 of the PRIMA1 protein (p.Glu127Lys). This variant is present in population databases (rs141491542, gnomAD 0.02%). 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: 1445743). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). 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

AlphaMissense

Benign

0.23

BayesDel_addAF

Benign

-0.18

BayesDel_noAF

Benign

-0.24

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.63

D;D

Eigen

Uncertain

0.28

Eigen_PC

Uncertain

0.26

FATHMM_MKL

Uncertain

0.82

M_CAP

Benign

0.026

MetaRNN

Benign

0.30

T;T

MetaSVM

Benign

-0.82

MutationAssessor

Benign

2.0

M;M

MutationTaster

Benign

0.92

D;D;D

PrimateAI

Uncertain

0.62

PROVEAN

Uncertain

-2.7

D;D

REVEL

Benign

0.23

Sift

Uncertain

0.022

D;D

Sift4G

Benign

0.092

T;T

Polyphen

1.0

D;D

Vest4

0.42

MutPred

0.20

Gain of MoRF binding (P = 0.0043);Gain of MoRF binding (P = 0.0043);

MVP

0.067

MPC

1.0

ClinPred

0.85

GERP RS

4.7

Varity_R

0.29

gMVP

0.81

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.11

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over