17-76064026-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_014230.4(SRP68):​c.511C>A​(p.Arg171Ser) variant causes a missense change. The variant allele was found at a frequency of 0.0000142 in 1,614,104 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000092 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0000062 ( 0 hom. )

Consequence

SRP68
NM_014230.4 missense

Scores

5
14

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.69
Variant links:
Genes affected
SRP68 (HGNC:11302): (signal recognition particle 68) This gene encodes a subunit of the signal recognition particle (SRP). The SRP is a ribonucleoprotein complex that transports secreted and membrane proteins to the endoplasmic reticulum for processing. The complex includes a 7S RNA and six protein subunits. The encoded protein is the 68kDa component of the SRP, and forms a heterodimer with the 72kDa subunit that is required for SRP function. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene, and three pseudogenes of this gene are located within the Smith-Magenis syndrome region on chromosome 17. [provided by RefSeq, May 2012]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.13434535).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
SRP68NM_014230.4 linkc.511C>A p.Arg171Ser missense_variant Exon 4 of 16 ENST00000307877.7 NP_055045.2 Q9UHB9-1
SRP68NM_001260502.2 linkc.397C>A p.Arg133Ser missense_variant Exon 3 of 15 NP_001247431.1 Q9UHB9-4
SRP68NR_048541.2 linkn.433C>A non_coding_transcript_exon_variant Exon 3 of 15

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
SRP68ENST00000307877.7 linkc.511C>A p.Arg171Ser missense_variant Exon 4 of 16 1 NM_014230.4 ENSP00000312066.1 Q9UHB9-1

Frequencies

GnomAD3 genomes
AF:
0.0000920
AC:
14
AN:
152220
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.000338
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
GnomAD3 exomes
AF:
0.0000159
AC:
4
AN:
251414
Hom.:
0
AF XY:
0.0000221
AC XY:
3
AN XY:
135882
show subpopulations
Gnomad AFR exome
AF:
0.000246
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS 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:
0.00000616
AC:
9
AN:
1461884
Hom.:
0
Cov.:
30
AF XY:
0.00000275
AC XY:
2
AN XY:
727244
show subpopulations
Gnomad4 AFR exome
AF:
0.000209
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00
Gnomad4 OTH exome
AF:
0.0000331
GnomAD4 genome
AF:
0.0000920
AC:
14
AN:
152220
Hom.:
0
Cov.:
32
AF XY:
0.0000807
AC XY:
6
AN XY:
74366
show subpopulations
Gnomad4 AFR
AF:
0.000338
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.00
Gnomad4 OTH
AF:
0.00
Bravo
AF:
0.000113
ESP6500AA
AF:
0.000227
AC:
1
ESP6500EA
AF:
0.00
AC:
0
ExAC
AF:
0.0000247
AC:
3

ClinVar

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

Submissions by phenotype

not specified Uncertain:1
Jul 10, 2024
Ambry Genetics
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

The c.511C>A (p.R171S) alteration is located in exon 4 (coding exon 4) of the SRP68 gene. This alteration results from a C to A substitution at nucleotide position 511, causing the arginine (R) at amino acid position 171 to be replaced by a serine (S). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.22
BayesDel_addAF
Benign
-0.20
T
BayesDel_noAF
Benign
-0.23
CADD
Benign
22
DANN
Uncertain
0.99
DEOGEN2
Benign
0.016
T;.
Eigen
Benign
0.055
Eigen_PC
Uncertain
0.24
FATHMM_MKL
Uncertain
0.88
D
LIST_S2
Uncertain
0.93
D;D
M_CAP
Benign
0.0020
T
MetaRNN
Benign
0.13
T;T
MetaSVM
Benign
-1.0
T
MutationAssessor
Benign
0.57
N;.
PrimateAI
Uncertain
0.58
T
PROVEAN
Benign
-0.56
N;N
REVEL
Benign
0.12
Sift
Benign
0.36
T;T
Sift4G
Benign
0.36
T;T
Polyphen
0.77
P;.
Vest4
0.54
MVP
0.30
MPC
0.65
ClinPred
0.086
T
GERP RS
5.8
Varity_R
0.79
gMVP
0.18

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

LitVar

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

Other links and lift over

dbSNP: rs144739272; hg19: chr17-74060107; API