chr6-150898848-T-TA

Position:

• chr6-150898848-T-TA

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The ENST00000367307.8(MTHFD1L):​c.781-12_781-11insA variant causes a splice polypyrimidine tract, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000197 in 151,932 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: 𝑓 0.000020 (0 hom., cov: 31)
  • Exomes 𝑓: 0.000026 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: MTHFD1L ENST00000367307.8 splice_polypyrimidine_tract, intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.572

Genes affected

MTHFD1L (HGNC:21055): (methylenetetrahydrofolate dehydrogenase (NADP+ dependent) 1 like) The protein encoded by this gene is involved in the synthesis of tetrahydrofolate (THF) in the mitochondrion. THF is important in the de novo synthesis of purines and thymidylate and in the regeneration of methionine from homocysteine. Several transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Jun 2011]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MTHFD1L	NM_015440.5	c.781-6802_781-6801insA		intron_variant		ENST00000367321.8	NP_056255.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MTHFD1L	ENST00000367321.8	c.781-6802_781-6801insA		intron_variant		1	NM_015440.5	ENSP00000356290	P4

Frequencies

GnomAD3 genomes AF: 0.0000197 AC: 3 AN: 151932 Hom.: 0 Cov.: 31

Gnomad AFR AF: 0.0000725

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.0000579 AC: 4 AN: 69106 Hom.: 0 AF XY: 0.0000996 AC XY: 4 AN XY: 40158

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.000142

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000698

Gnomad OTH exome AF: 0.00

GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 0.0000265 AC: 6 AN: 226626 Hom.: 0 Cov.: 1 AF XY: 0.0000226 AC XY: 3 AN XY: 132698

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000477

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000296

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome AF: 0.0000197 AC: 3 AN: 151932 Hom.: 0 Cov.: 31 AF XY: 0.0000135 AC XY: 1 AN XY: 74222

Gnomad4 AFR AF: 0.0000725

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00

Gnomad4 OTH AF: 0.00

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

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: rs3832406; hg19: chr6-151219984;