22-26494856-T-C

Variant summary

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

The NM_012143.4(TFIP11):c.1933A>G(p.Ile645Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000342 in 1,461,892 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. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000034 (0 hom.)
• Consequence: TFIP11 NM_012143.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.31

Genes affected

TFIP11 (HGNC:17165): (tuftelin interacting protein 11) This gene encodes a protein component of the spliceosome that promotes the release of the lariat-intron during late-stage splicing through the recruitment of a pre-mRNA splicing factor called DEAH-box helicase 15. The encoded protein contains a G-patch domain, a hallmark of RNA-processing proteins, that binds DEAH-box helicase 15. This protein contains an atypical nuclear localization sequence as well as a nuclear speckle-targeting sequence, enabling it to localize to distinct speckled regions within the cell nucleus. Polymorphisms in this gene are associated with dental caries suggesting a role in amelogenesis. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Nov 2016]

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=0.13223347).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TFIP11	NM_012143.4	c.1933A>G	p.Ile645Val	missense_variant	13/15	ENST00000407690.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TFIP11	ENST00000407690.6	c.1933A>G	p.Ile645Val	missense_variant	13/15	1	NM_012143.4	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.0000159 AC: 4 AN: 251482 Hom.: 0 AF XY: 0.00000736 AC XY: 1 AN XY: 135910

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.000116

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: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000342 AC: 5 AN: 1461892 Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2 AN XY: 727246

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.000112

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: 0.00

Gnomad4 OTH exome AF: 0.00

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

Oct 26, 2022

The c.1933A>G (p.I645V) alteration is located in exon 14 (coding exon 10) of the TFIP11 gene. This alteration results from a A to G substitution at nucleotide position 1933, causing the isoleucine (I) at amino acid position 645 to be replaced by a valine (V). 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	0.080
BayesDel_addAF	Benign	-0.41	T
BayesDel_noAF	Benign	-0.61
Cadd	Benign	15
Dann	Benign	0.97
DEOGEN2	Benign	0.052	T;T;T;T;T
Eigen	Benign	-0.62
Eigen_PC	Benign	-0.42
FATHMM_MKL	Uncertain	0.81	D
LIST_S2	Benign	0.75	T;.;.;.;.
M_CAP	Benign	0.0031	T
MetaRNN	Benign	0.13	T;T;T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.34	N;N;N;N;N
MutationTaster	Benign	0.98	D;D;D;D
PrimateAI	Uncertain	0.52	T
Sift4G	Benign	0.57	T;T;T;T;T
Polyphen		0.0	B;B;B;B;B
Vest4		0.16
MutPred		0.40		Loss of catalytic residue at L650 (P = 0.0313);Loss of catalytic residue at L650 (P = 0.0313);Loss of catalytic residue at L650 (P = 0.0313);Loss of catalytic residue at L650 (P = 0.0313);Loss of catalytic residue at L650 (P = 0.0313);
MVP		0.35
MPC		0.32
ClinPred		0.050	T
GERP RS		1.8
Varity_R		0.025
gMVP		0.20

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

Other links and lift over

dbSNP: rs1288785984; hg19: chr22-26890822;