11-755659-G-T

Variant names:

• chr11-755659-G-T
• rs3895063
• NM_006755.2:c.98-220G>T

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_006755.2(TALDO1):​c.98-220G>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000218 in 459,396 control chromosomes in the GnomAD database, with no homozygous occurrence. 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: not found (cov: 31)
  • Exomes 𝑓: 0.0000022 (0 hom.)
• Consequence: TALDO1 NM_006755.2 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.23
• Publications: 0 publications found

Genes affected

TALDO1 (HGNC:11559): (transaldolase 1) Transaldolase 1 is a key enzyme of the nonoxidative pentose phosphate pathway providing ribose-5-phosphate for nucleic acid synthesis and NADPH for lipid biosynthesis. This pathway can also maintain glutathione at a reduced state and thus protect sulfhydryl groups and cellular integrity from oxygen radicals. The functional gene of transaldolase 1 is located on chromosome 11 and a pseudogene is identified on chromosome 1 but there are conflicting map locations. The second and third exon of this gene were developed by insertion of a retrotransposable element. This gene is thought to be involved in multiple sclerosis. [provided by RefSeq, Jul 2008]

TALDO1 Gene-Disease associations (from GenCC):

• transaldolase deficiency

  Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Ambry Genetics, PanelApp Australia, Labcorp Genetics (formerly Invitae), Orphanet, G2P

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.92).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006755.2. 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
	TALDO1	NM_006755.2	MANE Select	c.98-220G>T		intron	N/A	NP_006746.1	A0A140VK56

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TALDO1	ENST00000319006.8	TSL:1 MANE Select	c.98-220G>T		intron	N/A	ENSP00000321259.3	P37837-1
	TALDO1	ENST00000528097.5	TSL:1	c.98-220G>T		intron	N/A	ENSP00000437098.1	F2Z393
	TALDO1	ENST00000896396.1		c.98-220G>T		intron	N/A	ENSP00000566455.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 0.00000218 AC: 1 AN: 459396 Hom.: 0 AF XY: 0.00000413 AC XY: 1 AN XY: 242418

African (AFR) AF: 0.0000760 AC: 1 AN: 13158

American (AMR) AF: 0.00 AC: 0 AN: 24890

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 13998

East Asian (EAS) AF: 0.00 AC: 0 AN: 27822

South Asian (SAS) AF: 0.00 AC: 0 AN: 49748

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 25168

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 1926

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 277212

Other (OTH) AF: 0.00 AC: 0 AN: 25474

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.92
CADD	Benign	0.067
DANN	Benign	0.54
PhyloP100		-2.2

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: rs3895063; hg19: chr11-755659;