rs1221264103

Variant names:

• chr11-119024898-C-T
• rs1221264103
• NM_001164277.2:c.*12G>A

Variant summary

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

The NM_001164277.2(SLC37A4):​c.*12G>A variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,634 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (no stars).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: SLC37A4 NM_001164277.2 3_prime_UTR
• Clinical Significance: Uncertain significance no assertion criteria provided U:1
• Conservation: PhyloP100: -0.363
• Publications: 0 publications found

Genes affected

SLC37A4 (HGNC:4061): (solute carrier family 37 member 4) This gene regulates glucose-6-phosphate transport from the cytoplasm to the lumen of the endoplasmic reticulum, in order to maintain glucose homeostasis. It also plays a role in ATP-mediated calcium sequestration in the lumen of the endoplasmic reticulum. Mutations in this gene have been associated with various forms of glycogen storage disease. Alternative splicing in this gene results in multiple transcript variants.[provided by RefSeq, Aug 2009]

TRAPPC4 (HGNC:19943): (trafficking protein particle complex subunit 4) Involved in autophagy and endoplasmic reticulum to Golgi vesicle-mediated transport. Part of TRAPP complex. [provided by Alliance of Genome Resources, Apr 2022]

TRAPPC4 Gene-Disease associations (from GenCC):

• neurodevelopmental disorder with epilepsy, spasticity, and brain atrophy

  Inheritance: AR Classification: DEFINITIVE, STRONG, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, G2P, ClinGen
• syndromic intellectual disability

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

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=0.12844297).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001164277.2. 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
	SLC37A4	NM_001164277.2	MANE Select	c.*12G>A		3_prime_UTR	Exon 11 of 11	NP_001157749.1	O43826-1
	SLC37A4	NM_001164278.2		c.*12G>A		3_prime_UTR	Exon 12 of 12	NP_001157750.1	O43826-2
	SLC37A4	NM_001164280.2		c.*12G>A		3_prime_UTR	Exon 9 of 9	NP_001157752.1	O43826-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SLC37A4	ENST00000330775.9	TSL:5	c.*12G>A		3_prime_UTR	Exon 10 of 10	ENSP00000476242.2	U3KPU7
	SLC37A4	ENST00000526275.5	TSL:1	n.2084G>A		non_coding_transcript_exon	Exon 6 of 6
	SLC37A4	ENST00000527992.5	TSL:1	n.1530G>A		non_coding_transcript_exon	Exon 9 of 9

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.00000405 AC: 1 AN: 247028 AF XY: 0.00000746

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000560

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.85e-7 AC: 1 AN: 1460634 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 726466

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 33460

American (AMR) AF: 0.00 AC: 0 AN: 44540

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26098

East Asian (EAS) AF: 0.0000252 AC: 1 AN: 39680

South Asian (SAS) AF: 0.00 AC: 0 AN: 86008

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53336

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111412

Other (OTH) AF: 0.00 AC: 0 AN: 60332

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
-	1	-	Glucose-6-phosphate transport defect (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.17
BayesDel_addAF	Benign	-0.28	T
BayesDel_noAF	Benign	-0.65
CADD	Benign	4.9
DANN	Benign	0.70
Eigen	Benign	-0.44
Eigen_PC	Benign	-0.56
FATHMM_MKL	Benign	0.24	N
M_CAP	Benign	0.0047	T
MetaRNN	Benign	0.13	T
MetaSVM	Benign	-0.96	T
PhyloP100		-0.36
PROVEAN	Benign	0.57	N
REVEL	Benign	0.033
Sift	Uncertain	0.0020	D
Vest4		0.12
MutPred		0.38		Loss of sheet (P = 0.0457)
MVP		0.48
ClinPred		0.070	T
GERP RS		3.2
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: rs1221264103; hg19: chr11-118895608;