1-47251625-T-G

Position:

• chr1-47251625-T-G

Variant summary

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

The NM_001048166.1(STIL):​c.3378A>C​(p.Arg1126Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,848 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. R1126R) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: STIL NM_001048166.1 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.404

Genes affected

STIL (HGNC:10879): (STIL centriolar assembly protein) This gene encodes a cytoplasmic protein implicated in regulation of the mitotic spindle checkpoint, a regulatory pathway that monitors chromosome segregation during cell division to ensure the proper distribution of chromosomes to daughter cells. The protein is phosphorylated in mitosis and in response to activation of the spindle checkpoint, and disappears when cells transition to G1 phase. It interacts with a mitotic regulator, and its expression is required to efficiently activate the spindle checkpoint. It is proposed to regulate Cdc2 kinase activity during spindle checkpoint arrest. Chromosomal deletions that fuse this gene and the adjacent locus commonly occur in T cell leukemias, and are thought to arise through illegitimate V-(D)-J recombination events. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
STIL	NM_001048166.1	c.3378A>C	p.Arg1126Ser	missense_variant	17/17	ENST00000371877.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
STIL	ENST00000371877.8	c.3378A>C	p.Arg1126Ser	missense_variant	17/17	1	NM_001048166.1	P5

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461848 Hom.: 0 Cov.: 33 AF XY: 0.00000138 AC XY: 1 AN XY: 727218

Gnomad4 AFR exome AF: 0.0000299

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: 0.0000166

GnomAD4 genome Cov.: 33

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.88
BayesDel_addAF	Pathogenic	0.18	D
BayesDel_noAF	Uncertain	0.020
CADD	Benign	22
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.73	D;.;.;.
Eigen	Uncertain	0.33
Eigen_PC	Uncertain	0.26
FATHMM_MKL	Uncertain	0.82	D
LIST_S2	Uncertain	0.88	D;D;D;D
M_CAP	Benign	0.042	D
MetaRNN	Uncertain	0.51	D;D;D;D
MetaSVM	Benign	-1.0	T
MutationAssessor	Uncertain	2.7	M;.;.;.
MutationTaster	Benign	0.99	D;D;D;D;D
PrimateAI	Uncertain	0.59	T
PROVEAN	Uncertain	-3.6	D;.;D;D
REVEL	Benign	0.27
Sift	Uncertain	0.0020	D;.;D;D
Sift4G	Uncertain	0.0050	D;D;D;D
Polyphen		1.0	D;.;D;D
Vest4		0.68
MutPred		0.23		Loss of MoRF binding (P = 0.0315);.;.;.;
MVP		0.51
MPC		0.55
ClinPred		0.99	D
GERP RS		2.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.49
gMVP		0.64

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: rs142315727; hg19: chr1-47717297;