NM_175871.4:c.425C>A

Variant names:

• chr19-11375688-C-A
• NM_175871.4:c.425C>A

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_175871.4(SWSAP1):​c.425C>A​(p.Thr142Lys) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,461,884 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: SWSAP1 NM_175871.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.68

Genes affected

SWSAP1 (HGNC:26638): (SWIM-type zinc finger 7 associated protein 1) Enables single-stranded DNA binding activity. Involved in double-strand break repair via homologous recombination and protein stabilization. Part of Shu complex. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.81

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SWSAP1	NM_175871.4	c.425C>A	p.Thr142Lys	missense_variant	Exon 2 of 2	ENST00000674460.1	NP_787067.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SWSAP1	ENST00000674460.1	c.425C>A	p.Thr142Lys	missense_variant	Exon 2 of 2		NM_175871.4	ENSP00000501355.1
SWSAP1	ENST00000312423.4	c.362C>A	p.Thr121Lys	missense_variant	Exon 2 of 2	1		ENSP00000310008.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461884 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727240

Gnomad4 AFR exome AF: 0.0000597

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: 0.00

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

Apr 20, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.362C>A (p.T121K) alteration is located in exon 2 (coding exon 2) of the SWSAP1 gene. This alteration results from a C to A substitution at nucleotide position 362, causing the threonine (T) at amino acid position 121 to be replaced by a lysine (K). 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	Pathogenic	0.85
BayesDel_addAF	Pathogenic	0.33	D
BayesDel_noAF	Pathogenic	0.23
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Benign	0.19	T
Eigen	Pathogenic	0.75
Eigen_PC	Pathogenic	0.71
FATHMM_MKL	Uncertain	0.90	D
LIST_S2	Benign	0.73	T
M_CAP	Benign	0.059	D
MetaRNN	Pathogenic	0.81	D
MetaSVM	Benign	-0.54	T
MutationAssessor	Uncertain	2.6	M
PrimateAI	Uncertain	0.63	T
PROVEAN	Uncertain	-4.1	D
REVEL	Benign	0.29
Sift	Uncertain	0.011	D
Sift4G	Uncertain	0.012	D
Polyphen		1.0	D
Vest4		0.82
MutPred		0.35		Gain of ubiquitination at T121 (P = 0.0289);
MVP		0.45
MPC		1.1
ClinPred		1.0	D
GERP RS		5.3
Varity_R		0.67
gMVP		0.72

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: chr19-11486364;