Genetic Variant FBXO36:p.Ala2Gly (chr2-229922518-C-G) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_174899.5(FBXO36):c.5C>G(p.Ala2Gly) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,598 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. A2V) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

FBXO36
NM_174899.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 4.02

Publications

0 publications found

Variant links:

Genes affected

FBXO36 (HGNC:27020): (F-box protein 36) Members of the F-box protein family, such as FBXO36, are characterized by an approximately 40-amino acid F-box motif. SCF complexes, formed by SKP1 (MIM 601434), cullin (see CUL1; MIM 603134), and F-box proteins, act as protein-ubiquitin ligases. F-box proteins interact with SKP1 through the F box, and they interact with ubiquitination targets through other protein interaction domains (Jin et al., 2004 [PubMed 15520277]).[supplied by OMIM, Mar 2008]

FBXO36 links:

TRIP12 (HGNC:12306): (thyroid hormone receptor interactor 12) The protein encoded by this gene is an E3 ubiquitin-protein ligase involved in the degradation of the p19ARF/ARF isoform of CDKN2A, a tumor suppressor. The encoded protein also plays a role in the DNA damage response by regulating the stability of USP7, which regulates tumor suppressor p53. [provided by RefSeq, Jan 2017]

TRIP12 Gene-Disease associations (from GenCC):

Clark-Baraitser syndrome
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
complex neurodevelopmental disorder
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
syndromic intellectual disability
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

TRIP12 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FBXO36	NM_174899.5 link	c.5C>G	p.Ala2Gly	missense_variant	Exon 1 of 4	ENST00000283946.8	NP_777559.3	Q8NEA4-1
TRIP12	NM_001348335.2 link	c.-50+630G>C		intron_variant	Intron 1 of 5		NP_001335264.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FBXO36	ENST00000283946.8 link	c.5C>G	p.Ala2Gly	missense_variant	Exon 1 of 4	1	NM_174899.5	ENSP00000283946.3		Q8NEA4-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461598

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727106

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.00

AC:

AN:

44708

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.00

AC:

AN:

39678

South Asian (SAS)

AF:

0.00

AC:

AN:

86238

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53294

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5762

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111918

Other (OTH)

AF:

0.00

AC:

AN:

60390

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.37

BayesDel_addAF

Benign

0.011

BayesDel_noAF

Benign

-0.22

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.098

T;.

Eigen

Uncertain

0.66

Eigen_PC

Uncertain

0.59

FATHMM_MKL

Benign

0.39

LIST_S2

Benign

0.54

T;T

M_CAP

Uncertain

0.10

MetaRNN

Uncertain

0.67

D;D

MetaSVM

Benign

-0.33

MutationAssessor

Uncertain

2.5

M;.

PhyloP100

4.0

PrimateAI

Uncertain

0.75

PROVEAN

Benign

-2.1

N;N

REVEL

Benign

0.15

Sift

Uncertain

0.019

D;D

Sift4G

Uncertain

0.024

D;D

Polyphen

1.0

D;D

Vest4

0.63

MutPred

0.12

Gain of disorder (P = 0.0948);Gain of disorder (P = 0.0948);

MVP

0.80

MPC

0.33

ClinPred

0.98

GERP RS

4.1

PromoterAI

-0.77

Under-expression

(source)

Varity_R

0.48

gMVP

0.56

Mutation Taster

=125/175

disease causing

(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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chr2-229922518-C-G

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over