1-32180445-C-T

Position:

• chr1-32180445-C-T

Variant summary

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

The ENST00000373610.8(TXLNA):​c.100C>T​(p.Pro34Ser) 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. 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)
• Consequence: TXLNA ENST00000373610.8 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.923

Genes affected

TXLNA (HGNC:30685): (taxilin alpha) Predicted to enable syntaxin binding activity. Predicted to be involved in exocytosis. Predicted to act upstream of or within B cell activation. Located in cytoplasm. [provided by Alliance of Genome Resources, Apr 2022]

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=0.120972276).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TXLNA	NM_175852.4	c.100C>T	p.Pro34Ser	missense_variant	2/11	ENST00000373610.8	NP_787048.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TXLNA	ENST00000373610.8	c.100C>T	p.Pro34Ser	missense_variant	2/11	1	NM_175852.4	ENSP00000362712	P1
TXLNA	ENST00000373609.1	c.100C>T	p.Pro34Ser	missense_variant	1/10	1		ENSP00000362711	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

Dec 12, 2022

The c.100C>T (p.P34S) alteration is located in exon 2 (coding exon 1) of the TXLNA gene. This alteration results from a C to T substitution at nucleotide position 100, causing the proline (P) at amino acid position 34 to be replaced by a serine (S). 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	0.074
BayesDel_addAF	Benign	-0.20	T
BayesDel_noAF	Benign	-0.53
CADD	Benign	17
DANN	Uncertain	0.99
DEOGEN2	Benign	0.083	T;T
Eigen	Benign	-0.17
Eigen_PC	Benign	-0.087
FATHMM_MKL	Benign	0.62	D
LIST_S2	Benign	0.75	.;T
M_CAP	Benign	0.0074	T
MetaRNN	Benign	0.12	T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.5	L;L
MutationTaster	Benign	0.52	N;N
PrimateAI	Benign	0.48	T
PROVEAN	Benign	-0.94	N;N
REVEL	Benign	0.056
Sift	Benign	0.16	T;T
Sift4G	Benign	0.27	T;T
Polyphen		0.61	P;P
Vest4		0.29
MutPred		0.23		Gain of loop (P = 0.0013);Gain of loop (P = 0.0013);
MVP		0.13
MPC		0.40
ClinPred		0.41	T
GERP RS		4.7
RBP_binding_hub_radar		0.92
RBP_regulation_power_radar		2.7
Varity_R		0.11
gMVP		0.11

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: chr1-32646046;