chr17-744928-C-G

Position:

• chr17-744928-C-G

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_015721.3(GEMIN4):​c.3115G>C​(p.Ala1039Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 34)
• Consequence: GEMIN4 NM_015721.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.26

Genes affected

GEMIN4 (HGNC:15717): (gem nuclear organelle associated protein 4) The product of this gene is part of a large complex localized to the cytoplasm, nucleoli, and to discrete nuclear bodies called Gemini bodies (gems). The complex functions in spliceosomal snRNP assembly in the cytoplasm, and regenerates spliceosomes required for pre-mRNA splicing in the nucleus. The encoded protein directly interacts with a DEAD box protein and several spliceosome core proteins. Alternatively spliced transcript variants have been described, but their biological validity has not been determined. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.745

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
GEMIN4	NM_015721.3	c.3115G>C	p.Ala1039Pro	missense_variant	2/2	ENST00000319004.6	NP_056536.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
GEMIN4	ENST00000319004.6	c.3115G>C	p.Ala1039Pro	missense_variant	2/2	1	NM_015721.3	ENSP00000321706	P1
GEMIN4	ENST00000576778.1	c.3082G>C	p.Ala1028Pro	missense_variant	1/1			ENSP00000459565

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 34

Bravo AF: 0.0000113

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 14, 2024

The c.3115G>C (p.A1039P) alteration is located in exon 2 (coding exon 2) of the GEMIN4 gene. This alteration results from a G to C substitution at nucleotide position 3115, causing the alanine (A) at amino acid position 1039 to be replaced by a proline (P). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.94
BayesDel_addAF	Uncertain	0.096	D
BayesDel_noAF	Benign	-0.10
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Benign	0.12	T;.
Eigen	Uncertain	0.58
Eigen_PC	Uncertain	0.52
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Benign	0.77	T;T
M_CAP	Benign	0.0091	T
MetaRNN	Pathogenic	0.75	D;D
MetaSVM	Benign	-1.2	T
MutationAssessor	Benign	1.6	L;.
MutationTaster	Benign	1.0	D;D
PrimateAI	Benign	0.43	T
PROVEAN	Uncertain	-2.9	D;.
REVEL	Benign	0.15
Sift	Uncertain	0.011	D;.
Sift4G	Uncertain	0.025	D;D
Polyphen		1.0	D;.
Vest4		0.75
MutPred		0.46		Gain of loop (P = 0.002);.;
MVP		0.55
MPC		0.68
ClinPred		0.94	D
GERP RS		5.7
Varity_R		0.75
gMVP		0.60

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: rs1974330799; hg19: chr17-648168;