Variant chrX-8800093-C-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_174951.3(FAM9A):c.79G>T(p.Ala27Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000119 in 1,096,354 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 3 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 13/17 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 20)

Exomes 𝑓: 0.000012 ( 0 hom. 3 hem. )

Consequence

FAM9A
NM_174951.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.172

Variant links:

Genes affected

FAM9A (HGNC:18403): (family with sequence similarity 9 member A) This gene is a member of a gene family which arose through duplication on the X chromosome. The encoded protein may be a nuclear protein that is localized to the nucleolus, and has some similarity to a synaptonemal complex protein. Multiple alternatively spliced variants, encoding the same protein, have been identified. [provided by RefSeq, Aug 2011]

FAM9A links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.064575255).

BS2

High Hemizygotes in GnomAdExome4 at 3 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FAM9A	NM_174951.3 linkuse as main transcript	c.79G>T	p.Ala27Ser	missense_variant	2/10	ENST00000381003.7
FAM9A	NM_001171186.1 linkuse as main transcript	c.79G>T	p.Ala27Ser	missense_variant	2/10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FAM9A	ENST00000381003.7 linkuse as main transcript	c.79G>T	p.Ala27Ser	missense_variant	2/10	1	NM_174951.3	P1
FAM9A	ENST00000543214.1 linkuse as main transcript	c.79G>T	p.Ala27Ser	missense_variant	2/10	1		P1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000165

AC:

AN:

181980

Hom.:

AF XY:

0.0000149

AC XY:

AN XY:

67004

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:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000371

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000119

AC:

AN:

1096354

Hom.:

Cov.:

AF XY:

0.00000829

AC XY:

AN XY:

361846

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000143

Gnomad4 OTH exome

AF:

0.0000217

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.00000756

ExAC

AF:

0.0000330

AC:

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 submitter

clinical testing

Ambry Genetics

Aug 26, 2022

The c.79G>T (p.A27S) alteration is located in exon 2 (coding exon 1) of the FAM9A gene. This alteration results from a G to T substitution at nucleotide position 79, causing the alanine (A) at amino acid position 27 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

0.12

BayesDel_addAF

Benign

-0.55

BayesDel_noAF

Benign

-0.91

CADD

Benign

0.97

DANN

Benign

0.83

DEOGEN2

Benign

0.0032

T;T

FATHMM_MKL

Benign

0.058

LIST_S2

Benign

0.21

T;.

M_CAP

Benign

0.00040

MetaRNN

Benign

0.065

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.0

N;N

MutationTaster

Benign

1.0

N;N

PROVEAN

Benign

0.020

N;N

REVEL

Benign

0.049

Sift

Benign

0.098

T;T

Sift4G

Benign

0.67

T;T

Polyphen

0.50

P;P

Vest4

0.068

MutPred

0.076

Gain of glycosylation at A27 (P = 0.016);Gain of glycosylation at A27 (P = 0.016);

MVP

0.23

MPC

0.052

ClinPred

0.039

Varity_R

0.17

gMVP

0.020

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