8-38820154-G-A

Variant summary

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

The NM_006283.3(TACC1):c.910G>A(p.Asp304Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000616 in 1,461,882 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 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: 0.0000062 (0 hom.)
• Consequence: TACC1 NM_006283.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.24

Genes affected

TACC1 (HGNC:11522): (transforming acidic coiled-coil containing protein 1) This locus may represent a breast cancer candidate gene. It is located close to FGFR1 on a region of chromosome 8 that is amplified in some breast cancers. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jun 2017]

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=0.108109415).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TACC1	NM_006283.3	c.910G>A	p.Asp304Asn	missense_variant	3/13	ENST00000317827.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TACC1	ENST00000317827.9	c.910G>A	p.Asp304Asn	missense_variant	3/13	1	NM_006283.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000616 AC: 9 AN: 1461882 Hom.: 0 Cov.: 31 AF XY: 0.00000688 AC XY: 5 AN XY: 727242

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

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: 0.00000719

Gnomad4 OTH exome AF: 0.0000166

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 10, 2022

The c.910G>A (p.D304N) alteration is located in exon 3 (coding exon 3) of the TACC1 gene. This alteration results from a G to A substitution at nucleotide position 910, causing the aspartic acid (D) at amino acid position 304 to be replaced by an asparagine (N). 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	0.084
BayesDel_addAF	Benign	-0.25	T
BayesDel_noAF	Benign	-0.60
Cadd	Benign	15
Dann	Uncertain	0.99
Eigen	Benign	-0.71
Eigen_PC	Benign	-0.75
FATHMM_MKL	Benign	0.35	N
LIST_S2	Benign	0.83	T;T;T;T;T;T;T;T
M_CAP	Benign	0.015	T
MetaRNN	Benign	0.11	T;T;T;T;T;T;T;T
MetaSVM	Benign	-1.0	T
MutationTaster	Benign	1.0	N;N;N;N;N;N;N;N;N;N
PrimateAI	Benign	0.37	T
PROVEAN	Uncertain	-2.4	N;N;.;N;D;N;N;N
REVEL	Benign	0.050
Sift	Benign	0.14	T;T;.;T;T;T;T;T
Sift4G	Benign	0.094	T;T;D;T;D;T;T;D
Polyphen		0.039	B;.;.;B;.;B;B;.
Vest4		0.12
MutPred		0.088		.;.;.;.;.;Loss of catalytic residue at D304 (P = 0.1002);.;.;
MVP		0.41
MPC		0.11
ClinPred		0.34	T
GERP RS		2.6
Varity_R		0.034
gMVP		0.091

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr8-38677672;