Genetic Variant SPATA31F1:p.Cys1327Gly (chr9-34723261-A-C) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001141917.2(SPATA31F1):c.3979T>G(p.Cys1327Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000264 in 1,551,698 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000023 ( 0 hom. )

Consequence

SPATA31F1
NM_001141917.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.100

Variant links:

Genes affected

SPATA31F1 (HGNC:41911): (SPATA31 subfamily F member 1) Located in nucleus. [provided by Alliance of Genome Resources, Apr 2022]

SPATA31F1 links:

PHF24 (HGNC:29180): (PHD finger protein 24) Predicted to enable metal ion binding activity. Predicted to act upstream of or within several processes, including detection of mechanical stimulus involved in sensory perception of pain; gamma-aminobutyric acid signaling pathway; and regulation of GABAergic synaptic transmission. [provided by Alliance of Genome Resources, Apr 2022]

PHF24 links:

ENSG00000288583 (HGNC:):

ENSG00000288583 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.015014231).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein
SPATA31F1	NM_001141917.2 link	c.3979T>G	p.Cys1327Gly	missense_variant	Exon 4 of 4	ENST00000378788.4	NP_001135389.1
PHF24	XM_047423102.1 link	c.133+20223A>C		intron_variant	Intron 4 of 11		XP_047279058.1
PHF24	XM_047423103.1 link	c.70+20223A>C		intron_variant	Intron 2 of 9		XP_047279059.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FAM205A	ENST00000378788.4 link	c.3979T>G	p.Cys1327Gly	missense_variant	Exon 4 of 4	2	NM_001141917.2	ENSP00000417711.1		Q6ZU69
ENSG00000288583	ENST00000664167.1 link	n.86+20223A>C		intron_variant	Intron 1 of 1

Frequencies

GnomAD3 genomes

AF:

0.0000591

AC:

AN:

152204

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:

0.00173

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:

0.000115

AC:

AN:

155924

Hom.:

AF XY:

0.0000605

AC XY:

AN XY:

82610

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00165

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:

0.0000229

AC:

AN:

1399376

Hom.:

Cov.:

AF XY:

0.0000130

AC XY:

AN XY:

690188

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000728

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.000103

GnomAD4 genome

AF:

0.0000591

AC:

AN:

152322

Hom.:

Cov.:

AF XY:

0.0000537

AC XY:

AN XY:

74484

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00174

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000434

Hom.:

Bravo

AF:

0.0000529

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 27, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.3979T>G (p.C1327G) alteration is located in exon 4 (coding exon 4) of the FAM205A gene. This alteration results from a T to G substitution at nucleotide position 3979, causing the cysteine (C) at amino acid position 1327 to be replaced by a glycine (G). 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

0.093

BayesDel_addAF

Benign

-0.59

BayesDel_noAF

Benign

-0.64

CADD

Benign

4.4

DANN

Benign

0.51

DEOGEN2

Benign

0.0050

Eigen

Benign

-0.94

Eigen_PC

Benign

-1.0

FATHMM_MKL

Benign

0.048

LIST_S2

Benign

0.45

M_CAP

Benign

0.011

MetaRNN

Benign

0.015

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.55

PrimateAI

Benign

0.27

PROVEAN

Benign

-1.9

REVEL

Benign

0.027

Sift

Benign

0.67

Sift4G

Benign

0.52

Polyphen

0.57

Vest4

0.10

MutPred

0.32

Gain of relative solvent accessibility (P = 0.0023);

MVP

0.35

ClinPred

0.050

GERP RS

1.0

Varity_R

0.046

gMVP

0.055

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.

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