Genetic Variant FAM120C:p.Gln672Gln (chrX-54132738-C-T) – ACMG Classification: Benign (-9 pts)

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_ModerateBP6_ModerateBP7BS2

The NM_017848.6(FAM120C):c.2016G>A(p.Gln672Gln) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000315 in 1,207,021 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 11 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.000054 ( 0 hom., 1 hem., cov: 23)

Exomes 𝑓: 0.000029 ( 0 hom. 10 hem. )

Consequence

FAM120C
NM_017848.6 synonymous

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -0.0650

Publications

0 publications found

Variant links:

Genes affected

FAM120C (HGNC:16949): (family with sequence similarity 120 member C) This gene encodes a potential transmembrane protein and lies in a region where mutations and deletions have been associated with intellectual disability and autism. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2011]

FAM120C links:

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ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -9 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.46).

BP6

Variant X-54132738-C-T is Benign according to our data. Variant chrX-54132738-C-T is described in ClinVar as Likely_benign. ClinVar VariationId is 2660654.Status of the report is criteria_provided_single_submitter, 1 stars.

BP7

Synonymous conserved (PhyloP=-0.065 with no splicing effect.

BS2

High Hemizygotes in GnomAdExome4 at 10 gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_017848.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FAM120C	NM_017848.6	MANE Select	c.2016G>A	p.Gln672Gln	synonymous	Exon 9 of 16	NP_060318.4
	FAM120C	NM_001300788.2		c.2016G>A	p.Gln672Gln	synonymous	Exon 9 of 14	NP_001287717.1	F8W881

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FAM120C	ENST00000375180.7	TSL:1 MANE Select	c.2016G>A	p.Gln672Gln	synonymous	Exon 9 of 16	ENSP00000364324.2	Q9NX05-1
	FAM120C	ENST00000328235.4	TSL:1	c.2016G>A	p.Gln672Gln	synonymous	Exon 9 of 14	ENSP00000329896.4	F8W881

Frequencies

GnomAD3 genomes

AF:

0.0000537

AC:

AN:

111832

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:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000113

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000285

AC:

AN:

175359

AF XY:

0.0000332

show subpopulations

Gnomad AFR exome

AF:

0.0000786

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000641

Gnomad NFE exome

AF:

0.0000382

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000292

AC:

AN:

1095189

Hom.:

Cov.:

AF XY:

0.0000277

AC XY:

AN XY:

360713

show subpopulations

African (AFR)

AF:

0.0000380

AC:

AN:

26327

American (AMR)

AF:

0.00

AC:

AN:

34781

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19306

East Asian (EAS)

AF:

0.00

AC:

AN:

30142

South Asian (SAS)

AF:

0.00

AC:

AN:

53320

European-Finnish (FIN)

AF:

0.00

AC:

AN:

40420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4122

European-Non Finnish (NFE)

AF:

0.0000357

AC:

AN:

840790

Other (OTH)

AF:

0.0000217

AC:

AN:

45981

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000537

AC:

AN:

111832

Hom.:

Cov.:

AF XY:

0.0000294

AC XY:

AN XY:

33996

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

30789

American (AMR)

AF:

0.00

AC:

AN:

10454

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

2646

East Asian (EAS)

AF:

0.00

AC:

AN:

3573

South Asian (SAS)

AF:

0.00

AC:

AN:

2662

European-Finnish (FIN)

AF:

0.00

AC:

AN:

6098

Middle Eastern (MID)

AF:

0.00

AC:

AN:

237

European-Non Finnish (NFE)

AF:

0.000113

AC:

AN:

53187

Other (OTH)

AF:

0.00

AC:

AN:

1501

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.0000302

ClinVar

ClinVar submissions

Significance:Likely benign

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.46

CADD

Benign

4.9

(source)

DANN

Benign

0.69

PhyloP100

-0.065

Mutation Taster

=100/0

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over