17-20096713-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001243439.2(SPECC1):​c.62G>A​(p.Arg21Gln) variant causes a missense change. The variant allele was found at a frequency of 0.00000805 in 1,614,108 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 0.000033 ( 0 hom., cov: 33)
Exomes 𝑓: 0.0000055 ( 0 hom. )

Consequence

SPECC1
NM_001243439.2 missense

Scores

4
15

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.65
Variant links:
Genes affected
SPECC1 (HGNC:30615): (sperm antigen with calponin homology and coiled-coil domains 1) The protein encoded by this gene belongs to the cytospin-A family. It is localized in the nucleus, and highly expressed in testis and some cancer cell lines. A chromosomal translocation involving this gene and platelet-derived growth factor receptor, beta gene (PDGFRB) may be a cause of juvenile myelomonocytic leukemia. Alternatively spliced transcript variants encoding different isoforms have been described for this gene. [provided by RefSeq, Aug 2011]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
SPECC1NM_001243439.2 linkuse as main transcriptc.62G>A p.Arg21Gln missense_variant 2/15 ENST00000395527.9 NP_001230368.1 Q5M775-1A0A024QYY9B4E2A4B4DW07

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
SPECC1ENST00000395527.9 linkuse as main transcriptc.62G>A p.Arg21Gln missense_variant 2/152 NM_001243439.2 ENSP00000378898.4 Q5M775-1

Frequencies

GnomAD3 genomes
AF:
0.0000328
AC:
5
AN:
152242
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.0000965
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0000654
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:
0.0000279
AC:
7
AN:
251316
Hom.:
0
AF XY:
0.0000368
AC XY:
5
AN XY:
135874
show subpopulations
Gnomad AFR exome
AF:
0.000308
Gnomad AMR exome
AF:
0.0000289
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.0000327
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000547
AC:
8
AN:
1461866
Hom.:
0
Cov.:
29
AF XY:
0.00000688
AC XY:
5
AN XY:
727232
show subpopulations
Gnomad4 AFR exome
AF:
0.0000597
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000232
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000360
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.0000328
AC:
5
AN:
152242
Hom.:
0
Cov.:
33
AF XY:
0.0000538
AC XY:
4
AN XY:
74388
show subpopulations
Gnomad4 AFR
AF:
0.0000965
Gnomad4 AMR
AF:
0.0000654
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
Alfa
AF:
0.0000282
Hom.:
0
Bravo
AF:
0.0000416
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
Uncertain significance, criteria provided, single submitterclinical testingAmbry GeneticsAug 02, 2022The c.62G>A (p.R21Q) alteration is located in exon 1 (coding exon 1) of the SPECC1 gene. This alteration results from a G to A substitution at nucleotide position 62, causing the arginine (R) at amino acid position 21 to be replaced by a glutamine (Q). 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
0.15
BayesDel_addAF
Benign
-0.20
T
BayesDel_noAF
Benign
-0.21
CADD
Uncertain
26
DANN
Benign
0.82
DEOGEN2
Benign
0.027
T;T;T;.;T;.;T;T;.
Eigen
Uncertain
0.21
Eigen_PC
Benign
0.073
FATHMM_MKL
Benign
0.54
D
LIST_S2
Uncertain
0.89
.;D;D;D;T;D;D;D;D
M_CAP
Benign
0.058
D
MetaRNN
Benign
0.12
T;T;T;T;T;T;T;T;T
MetaSVM
Benign
-0.62
T
MutationAssessor
Uncertain
2.1
M;.;.;.;.;M;M;.;.
PrimateAI
Benign
0.48
T
PROVEAN
Benign
-1.4
N;.;.;.;.;N;N;.;.
REVEL
Benign
0.18
Sift
Uncertain
0.013
D;.;.;.;.;D;D;.;.
Sift4G
Benign
0.28
T;D;D;D;.;T;T;D;D
Polyphen
1.0
D;.;.;.;.;D;D;.;.
Vest4
0.54
MVP
0.52
MPC
0.48
ClinPred
0.21
T
GERP RS
4.1
Varity_R
0.090
gMVP
0.37

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.36
Details are displayed if max score is > 0.2
DS_DG_spliceai
0.36
Position offset: 1

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: rs371567265; hg19: chr17-20000026; COSMIC: COSV54957222; COSMIC: COSV54957222; API