NM_001130965.3:c.597G>T

Variant names:

• chr7-843459-G-T
• rs374832216
• NM_001130965.3:c.597G>T

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_001130965.3(SUN1):​c.597G>T​(p.Thr199Thr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,766 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. T199T) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: SUN1 NM_001130965.3 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -4.33
• Publications: 1 publications found

Genes affected

SUN1 (HGNC:18587): (Sad1 and UNC84 domain containing 1) This gene is a member of the unc-84 homolog family and encodes a nuclear envelope protein with an Unc84 (SUN) domain. The protein is involved in nuclear anchorage and migration. Alternatively spliced transcript variants have been described. [provided by RefSeq, Jan 2019]

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (REVEL=0.002).
• BP7: Synonymous conserved (PhyloP=-4.32 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001130965.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SUN1	NM_001130965.3	MANE Select	c.597G>T	p.Thr199Thr	synonymous	Exon 5 of 19	NP_001124437.1
	SUN1	NM_001367658.1		c.-165G>T		5_prime_UTR_premature_start_codon_gain	Exon 5 of 20	NP_001354587.1
	SUN1	NM_001367635.1		c.140G>T	p.Arg47Leu	missense	Exon 6 of 21	NP_001354564.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SUN1	ENST00000401592.6	TSL:1 MANE Select	c.597G>T	p.Thr199Thr	synonymous	Exon 5 of 19	ENSP00000384015.1
	SUN1	ENST00000429178.5	TSL:1	c.90G>T	p.Thr30Thr	synonymous	Exon 1 of 17	ENSP00000409909.1
	SUN1	ENST00000457378.6	TSL:1	c.660G>T	p.Thr220Thr	synonymous	Exon 7 of 7	ENSP00000395952.2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.00000402 AC: 1 AN: 248964 AF XY: 0.00000739

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS 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: 6.84e-7 AC: 1 AN: 1461766 Hom.: 0 Cov.: 34 AF XY: 0.00000138 AC XY: 1 AN XY: 727190

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.00 AC: 0 AN: 39698

South Asian (SAS) AF: 0.0000116 AC: 1 AN: 86254

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53368

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111960

Other (OTH) AF: 0.00 AC: 0 AN: 60382

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.84
CADD	Benign	0.010
DANN	Benign	0.67
PhyloP100		-4.3
PromoterAI		0.027	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1

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

Other links and lift over

dbSNP: rs374832216; hg19: chr7-883096;