7-150720887-C-T

Variant names:

• chr7-150720887-C-T
• rs1216083024
• NM_130759.4:c.883C>T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_130759.4(GIMAP1):​c.883C>T​(p.Arg295Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000693 in 1,441,968 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R295G) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: GIMAP1 NM_130759.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.08
• Publications: 0 publications found

Genes affected

GIMAP1 (HGNC:23237): (GTPase, IMAP family member 1) This gene encodes a protein belonging to the GTP-binding superfamily and to the immuno-associated nucleotide (IAN) subfamily of nucleotide-binding proteins. In humans, the IAN subfamily genes are located in a cluster at 7q36.1. This gene is thought to be involved in the differentiation of T helper (Th) cells of the Th1 lineage, and the related mouse gene has been shown to be critical for the development of mature B and T lymphocytes. Read-through transcription exists between this gene and the downstream GIMAP5 (GTPase, IMAP family member 5) gene. [provided by RefSeq, Dec 2010]

GIMAP1-GIMAP5 (HGNC:51257): (GIMAP1-GIMAP5 readthrough) This locus represents naturally occurring readthrough transcription between the neighboring GIMAP1 (GTPase, IMAP family member 1) and GIMAP5 (GTPase, IMAP family member 5) genes on chromosome 7. Alternative splicing results in multiple readthrough transcript variants, one of which encodes a fusion protein that shares sequence identity with each individual gene product. [provided by RefSeq, Jan 2015]

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.11533126).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_130759.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GIMAP1	NM_130759.4	MANE Select	c.883C>T	p.Arg295Trp	missense	Exon 3 of 3	NP_570115.1	Q8WWP7
	GIMAP1-GIMAP5	NM_001199577.2		c.402+481C>T		intron	N/A	NP_001186506.1	A0A087WTJ2
	GIMAP1-GIMAP5	NM_001303630.2		c.18+1797C>T		intron	N/A	NP_001290559.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GIMAP1	ENST00000307194.6	TSL:1 MANE Select	c.883C>T	p.Arg295Trp	missense	Exon 3 of 3	ENSP00000302833.5	Q8WWP7
	GIMAP1-GIMAP5	ENST00000611999.4	TSL:5	c.402+481C>T		intron	N/A	ENSP00000477920.1	A0A087WTJ2
	GIMAP1	ENST00000867917.1		c.883C>T	p.Arg295Trp	missense	Exon 2 of 2	ENSP00000537976.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.93e-7 AC: 1 AN: 1441968 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 717140

African (AFR) AF: 0.00 AC: 0 AN: 32960

American (AMR) AF: 0.00 AC: 0 AN: 42768

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25358

East Asian (EAS) AF: 0.0000253 AC: 1 AN: 39526

South Asian (SAS) AF: 0.00 AC: 0 AN: 84740

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 44706

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5376

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1106874

Other (OTH) AF: 0.00 AC: 0 AN: 59660

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.13
BayesDel_addAF	Benign	-0.22	T
BayesDel_noAF	Benign	-0.55
CADD	Benign	12
DANN	Uncertain	0.99
DEOGEN2	Benign	0.020	T
Eigen	Benign	-0.85
Eigen_PC	Benign	-1.1
FATHMM_MKL	Benign	0.020	N
LIST_S2	Benign	0.62	T
M_CAP	Benign	0.0039	T
MetaRNN	Benign	0.12	T
MetaSVM	Benign	-0.96	T
MutationAssessor	Benign	1.6	L
PhyloP100		-1.1
PROVEAN	Benign	-1.2	N
REVEL	Benign	0.11
Sift	Uncertain	0.0060	D
Sift4G	Uncertain	0.010	D
Polyphen		1.0	D
Vest4		0.19
MutPred		0.37		Loss of disorder (P = 0.0487)
MVP		0.043
MPC		1.4
ClinPred		0.61	D
GERP RS		-1.2
Varity_R		0.035
gMVP		0.75
Mutation Taster		=100/0	polymorphism

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: rs1216083024; hg19: chr7-150417975;