21-44852737-T-C

Variant names:

• chr21-44852737-T-C
• rs1344110
• NM_004339.4:c.497-1110A>G

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_004339.4(PTTG1IP):​c.497-1110A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.181 in 151,862 control chromosomes in the GnomAD database, including 3,120 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.18 (3120 hom., cov: 32)
• Consequence: PTTG1IP NM_004339.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.92
• Publications: 10 publications found

Genes affected

PTTG1IP (HGNC:13524): (PTTG1 interacting protein) This gene encodes a single-pass type I integral membrane protein, which binds to pituitary tumor-transforming 1 protein (PTTG1), and facilitates translocation of PTTG1 into the nucleus. Coexpression of this protein and PTTG1 induces transcriptional activation of basic fibroblast growth factor. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Nov 2013]

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-1.03).
• BA1: GnomAd4 highest subpopulation (SAS) allele frequency at 95% confidence interval = 0.291 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004339.4. 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
	PTTG1IP	NM_004339.4	MANE Select	c.497-1110A>G		intron	N/A	NP_004330.1
	PTTG1IP	NM_001286822.2		c.169-1110A>G		intron	N/A	NP_001273751.1
	PTTG1IP	NR_104597.2		n.462-1110A>G		intron	N/A

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PTTG1IP	ENST00000330938.8	TSL:1 MANE Select	c.497-1110A>G		intron	N/A	ENSP00000328325.3
	PTTG1IP	ENST00000397886.3	TSL:4	c.434-1110A>G		intron	N/A	ENSP00000380983.3
	PTTG1IP	ENST00000445724.3	TSL:2	c.169-1110A>G		intron	N/A	ENSP00000395374.2

Frequencies

GnomAD3 genomes AF: 0.181 AC: 27411 AN: 151744 Hom.: 3117 Cov.: 32

Gnomad AFR AF: 0.0466

Gnomad AMI AF: 0.195

Gnomad AMR AF: 0.140

Gnomad ASJ AF: 0.215

Gnomad EAS AF: 0.226

Gnomad SAS AF: 0.303

Gnomad FIN AF: 0.229

Gnomad MID AF: 0.168

Gnomad NFE AF: 0.250

Gnomad OTH AF: 0.178

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.181 AC: 27419 AN: 151862 Hom.: 3120 Cov.: 32 AF XY: 0.182 AC XY: 13493 AN XY: 74216

African (AFR) AF: 0.0465 AC: 1925 AN: 41432

American (AMR) AF: 0.140 AC: 2137 AN: 15272

Ashkenazi Jewish (ASJ) AF: 0.215 AC: 744 AN: 3466

East Asian (EAS) AF: 0.226 AC: 1166 AN: 5156

South Asian (SAS) AF: 0.304 AC: 1459 AN: 4804

European-Finnish (FIN) AF: 0.229 AC: 2421 AN: 10556

Middle Eastern (MID) AF: 0.170 AC: 50 AN: 294

European-Non Finnish (NFE) AF: 0.250 AC: 16956 AN: 67864

Other (OTH) AF: 0.182 AC: 384 AN: 2108

Alfa AF: 0.229 Hom.: 2339

Bravo AF: 0.166

Asia WGS AF: 0.273 AC: 949 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-1.0
CADD	Benign	0.14
DANN	Benign	0.21
PhyloP100		-1.9
Mutation Taster		=100/0	polymorphism (auto)

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: rs1344110; hg19: chr21-46272652;