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GeneBe

22-50744824-C-T

Variant summary

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

The NM_001097.3(ACR):c.883C>T(p.Arg295Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000199 in 1,454,550 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R295H) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 28)
Exomes 𝑓: 0.000020 ( 0 hom. )
Failed GnomAD Quality Control

Consequence

ACR
NM_001097.3 missense

Scores

4
14

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.337
Variant links:
Genes affected
ACR (HGNC:126): (acrosin) Acrosin is the major proteinase present in the acrosome of mature spermatozoa. It is a typical serine proteinase with trypsin-like specificity. It is stored in the acrosome in its precursor form, proacrosin. The active enzyme functions in the lysis of the zona pellucida, thus facilitating penetration of the sperm through the innermost glycoprotein layers of the ovum. The mRNA for proacrosin is synthesized only in the postmeiotic stages of spermatogenesis. In humans proacrosin first appears in the haploid spermatids. [provided by RefSeq, Jul 2008]

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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=0.15157428).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
ACRNM_001097.3 linkuse as main transcriptc.883C>T p.Arg295Cys missense_variant 5/5 ENST00000216139.10

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
ACRENST00000216139.10 linkuse as main transcriptc.883C>T p.Arg295Cys missense_variant 5/51 NM_001097.3 P1
ACRENST00000527761.1 linkuse as main transcriptn.342C>T non_coding_transcript_exon_variant 2/25

Frequencies

GnomAD3 genomes
AF:
0.00
AC:
4
AN:
150886
Hom.:
0
Cov.:
28
FAILED QC
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.000399
Gnomad SAS
AF:
0.000424
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.00
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.0000316
AC:
6
AN:
189688
Hom.:
0
AF XY:
0.0000295
AC XY:
3
AN XY:
101676
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.000215
Gnomad SAS exome
AF:
0.0000402
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000249
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000199
AC:
29
AN:
1454550
Hom.:
0
Cov.:
33
AF XY:
0.0000235
AC XY:
17
AN XY:
723004
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.0000228
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.000229
Gnomad4 SAS exome
AF:
0.0000705
Gnomad4 FIN exome
AF:
0.0000190
Gnomad4 NFE exome
AF:
0.0000108
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Data not reliable, filtered out with message: AS_VQSR
AF:
0.0000265
AC:
4
AN:
151000
Hom.:
0
Cov.:
28
AF XY:
0.0000407
AC XY:
3
AN XY:
73708
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.000400
Gnomad4 SAS
AF:
0.000425
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.00
Gnomad4 OTH
AF:
0.00
Bravo
AF:
0.0000264
ExAC
AF:
0.0000250
AC:
3

ClinVar

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

Submissions by phenotype

not specified Uncertain:1
Uncertain significance, criteria provided, single submitterclinical testingAmbry GeneticsDec 06, 2022The c.883C>T (p.R295C) alteration is located in exon 5 (coding exon 5) of the ACR gene. This alteration results from a C to T substitution at nucleotide position 883, causing the arginine (R) at amino acid position 295 to be replaced by a cysteine (C). 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
0.21
BayesDel_addAF
Benign
-0.18
T
BayesDel_noAF
Benign
-0.31
Cadd
Benign
19
Dann
Uncertain
1.0
DEOGEN2
Benign
0.41
T
Eigen
Benign
-0.57
Eigen_PC
Benign
-0.73
FATHMM_MKL
Benign
0.030
N
M_CAP
Uncertain
0.098
D
MetaRNN
Benign
0.15
T
MetaSVM
Benign
-0.46
T
MutationAssessor
Benign
0.69
N
MutationTaster
Benign
1.0
N
PrimateAI
Benign
0.36
T
PROVEAN
Benign
-1.3
N
REVEL
Benign
0.23
Sift
Uncertain
0.0010
D
Sift4G
Uncertain
0.058
T
Polyphen
0.96
D
Vest4
0.16
MutPred
0.50
Loss of MoRF binding (P = 9e-04);
MVP
0.91
ClinPred
0.19
T
GERP RS
1.4
Varity_R
0.12
gMVP
0.28

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: rs543333675; hg19: chr22-51183252; API