15-22853374-CTTTTTTT-CTTTTT

Variant names:

• chr15-22853374-CTT-C
• rs35568106
• NM_030922.7:c.196+122_196+123delTT

Variant summary

Our verdict is Benign. The variant received -10 ACMG points: 0P and 10B. BP6_Moderate BA1

The NM_030922.7(NIPA2):​c.196+122_196+123delTT variant causes a intron change. The variant allele was found at a frequency of 0.152 in 373,554 control chromosomes in the GnomAD database, including 1,478 homozygotes. Variant has been reported in ClinVar as Benign (★).

• Frequency:
  • Genomes: 𝑓 0.15 (1250 hom., cov: 23)
  • Exomes 𝑓: 0.15 (228 hom.)
• Consequence: NIPA2 NM_030922.7 intron
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 3.79
• Publications: 1 publications found

Genes affected

NIPA2 (HGNC:17044): (NIPA magnesium transporter 2) This gene encodes a possible magnesium transporter. This gene is located adjacent to the imprinted domain in the Prader-Willi syndrome deletion region of chromosome 15. Alternate splicing results in multiple transcript variants. Pseudogenes of this gene are found on chromosomes 3, 7 and 21.[provided by RefSeq, May 2010]

ACMG classification

Our verdict: Benign. The variant received -10 ACMG points.

• BP6: Variant 15-22853374-CTT-C is Benign according to our data. Variant chr15-22853374-CTT-C is described in ClinVar as [Benign]. Clinvar id is 1260282.Status of the report is criteria_provided_single_submitter, 1 stars.
• BA1: GnomAd4 highest subpopulation (AMR) allele frequency at 95% confidence interval = 0.243 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NIPA2	NM_030922.7	c.196+122_196+123delTT		intron_variant	Intron 5 of 7	ENST00000337451.8	NP_112184.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NIPA2	ENST00000337451.8	c.196+107_196+108delTT		intron_variant	Intron 5 of 7	5	NM_030922.7	ENSP00000337618.3

Frequencies

GnomAD3 genomes AF: 0.153 AC: 20913 AN: 136808 Hom.: 1242 Cov.: 23

Gnomad AFR AF: 0.183

Gnomad AMI AF: 0.106

Gnomad AMR AF: 0.249

Gnomad ASJ AF: 0.140

Gnomad EAS AF: 0.0183

Gnomad SAS AF: 0.136

Gnomad FIN AF: 0.117

Gnomad MID AF: 0.145

Gnomad NFE AF: 0.132

Gnomad OTH AF: 0.162

GnomAD4 exome AF: 0.151 AC: 35818 AN: 236718 Hom.: 228 AF XY: 0.151 AC XY: 19346 AN XY: 127868

African (AFR) AF: 0.187 AC: 1107 AN: 5924

American (AMR) AF: 0.251 AC: 2287 AN: 9126

Ashkenazi Jewish (ASJ) AF: 0.160 AC: 1022 AN: 6402

East Asian (EAS) AF: 0.0795 AC: 1195 AN: 15034

South Asian (SAS) AF: 0.169 AC: 3654 AN: 21610

European-Finnish (FIN) AF: 0.149 AC: 2086 AN: 14010

Middle Eastern (MID) AF: 0.166 AC: 194 AN: 1168

European-Non Finnish (NFE) AF: 0.148 AC: 22382 AN: 151120

Other (OTH) AF: 0.153 AC: 1891 AN: 12324

GnomAD4 genome AF: 0.153 AC: 20939 AN: 136836 Hom.: 1250 Cov.: 23 AF XY: 0.152 AC XY: 9982 AN XY: 65774

African (AFR) AF: 0.183 AC: 6781 AN: 37094

American (AMR) AF: 0.250 AC: 3342 AN: 13390

Ashkenazi Jewish (ASJ) AF: 0.140 AC: 459 AN: 3282

East Asian (EAS) AF: 0.0184 AC: 86 AN: 4686

South Asian (SAS) AF: 0.136 AC: 590 AN: 4336

European-Finnish (FIN) AF: 0.117 AC: 897 AN: 7676

Middle Eastern (MID) AF: 0.154 AC: 41 AN: 266

European-Non Finnish (NFE) AF: 0.132 AC: 8349 AN: 63352

Other (OTH) AF: 0.160 AC: 301 AN: 1880

Alfa AF: 0.00 Hom.: 0

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

May 13, 2021

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
PhyloP100		3.8

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: rs35568106; hg19: chr15-23019694;