Genetic Variant NM_020223.4:c.76G>T (chr7-193275-G-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_020223.4(FAM20C):c.76G>T(p.Ala26Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000077 in 1,298,890 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A26P) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 7.7e-7 ( 0 hom. )

Consequence

FAM20C
NM_020223.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.954

Publications

0 publications found

Variant links:

Genes affected

FAM20C (HGNC:22140): (FAM20C golgi associated secretory pathway kinase) This gene encodes a member of the family of secreted protein kinases. The encoded protein binds calcium and phosphorylates proteins involved in bone mineralization. Mutations in this gene are associated with the autosomal recessive disorder Raine syndrome. [provided by RefSeq, Apr 2014]

FAM20C Gene-Disease associations (from GenCC):

lethal osteosclerotic bone dysplasia
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Orphanet, G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae), Genomics England PanelApp

FAM20C links:

ENSG00000240093 (HGNC:):

ENSG00000240093 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.21227813).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_020223.4. 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
	FAM20C	NM_020223.4	MANE Select	c.76G>T	p.Ala26Ser	missense	Exon 1 of 10	NP_064608.2	Q8IXL6-1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
FAM20C	ENST00000313766.6	TSL:1 MANE Select	c.76G>T	p.Ala26Ser	missense	Exon 1 of 10	ENSP00000322323.5	Q8IXL6-1
FAM20C	ENST00000942064.1		c.76G>T	p.Ala26Ser	missense	Exon 1 of 11	ENSP00000612123.1
FAM20C	ENST00000866115.1		c.76G>T	p.Ala26Ser	missense	Exon 1 of 11	ENSP00000536174.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

7.70e-7

AC:

AN:

1298890

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

641200

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

25792

American (AMR)

AF:

0.00

AC:

AN:

29814

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

21636

East Asian (EAS)

AF:

0.00

AC:

AN:

27332

South Asian (SAS)

AF:

0.00

AC:

AN:

74888

European-Finnish (FIN)

AF:

0.00

AC:

AN:

32058

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5194

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1029756

Other (OTH)

AF:

0.0000191

AC:

AN:

52420

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

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

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.14

BayesDel_addAF

Benign

-0.074

BayesDel_noAF

Benign

-0.34

CADD

Benign

(source)

DANN

Benign

0.97

DEOGEN2

Benign

0.0047

Eigen

Benign

-0.27

Eigen_PC

Benign

-0.18

FATHMM_MKL

Uncertain

0.79

LIST_S2

Uncertain

0.86

M_CAP

Pathogenic

0.75

MetaRNN

Benign

0.21

MetaSVM

Benign

-0.64

PhyloP100

0.95

PrimateAI

Uncertain

0.77

PROVEAN

Benign

-0.74

REVEL

Benign

0.25

Sift

Benign

0.044

Sift4G

Benign

0.11

Polyphen

0.18

Vest4

0.074

MutPred

0.49

Loss of helix (P = 0.0104)

MVP

0.22

MPC

0.47

ClinPred

0.18

GERP RS

3.2

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.0

Varity_R

0.050

gMVP

0.50

Mutation Taster

=96/4

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over