chr12-57799859-A-G

Position:

• chr12-57799859-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_006576.4(AVIL):​c.2282T>C​(p.Ile761Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: AVIL NM_006576.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.76

Genes affected

AVIL (HGNC:14188): (advillin) The protein encoded by this gene is a member of the gelsolin/villin family of actin regulatory proteins. This protein has structural similarity to villin. It binds actin and may play a role in the development of neuronal cells that form ganglia. [provided by RefSeq, Jul 2008]

TSFM (HGNC:12367): (Ts translation elongation factor, mitochondrial) This gene encodes a mitochondrial translation elongation factor. The encoded protein is an enzyme that catalyzes the exchange of guanine nucleotides on the translation elongation factor Tu during the elongation step of mitchondrial protein translation. Mutations in this gene are associated with combined oxidative phosphorylation deficiency-3 syndrome. Alternate splicing results in multiple transcript variants.[provided by RefSeq, Mar 2010]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.08129269).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
AVIL	NM_006576.4	c.2282T>C	p.Ile761Thr	missense_variant	19/20	ENST00000549994.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
AVIL	ENST00000549994.2	c.2282T>C	p.Ile761Thr	missense_variant	19/20	4	NM_006576.4	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 16, 2023

The c.2282T>C (p.I761T) alteration is located in exon 18 (coding exon 18) of the AVIL gene. This alteration results from a T to C substitution at nucleotide position 2282, causing the isoleucine (I) at amino acid position 761 to be replaced by a threonine (T). 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	0.10
BayesDel_addAF	Benign	-0.22	T
BayesDel_noAF	Benign	-0.55
CADD	Benign	19
DANN	Benign	0.94
DEOGEN2	Benign	0.069	T
Eigen	Benign	-0.45
Eigen_PC	Benign	-0.28
FATHMM_MKL	Benign	0.35	N
LIST_S2	Benign	0.70	T
M_CAP	Benign	0.0054	T
MetaRNN	Benign	0.081	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.4	L
MutationTaster	Benign	1.0	D;D;D;N;N
PrimateAI	Benign	0.30	T
PROVEAN	Benign	0.61	N
REVEL	Benign	0.064
Sift	Benign	0.39	T
Sift4G	Benign	0.76	T
Polyphen		0.010	B
Vest4		0.24
MutPred		0.54		Gain of disorder (P = 0.0182);
MVP		0.24
MPC		0.15
ClinPred		0.32	T
GERP RS		4.8
Varity_R		0.13
gMVP		0.43

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr12-58193642;