chr21-45529735-C-G

Variant names:

• chr21-45529735-C-G
• rs4819128
• NM_194255.4:c.1151+1035G>C

Variant summary

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

The NM_194255.4(SLC19A1):​c.1151+1035G>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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)
• Consequence: SLC19A1 NM_194255.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.0700
• Publications: 9 publications found

Genes affected

SLC19A1 (HGNC:10937): (solute carrier family 19 member 1) The membrane protein encoded by this gene is a transporter of folate and is involved in the regulation of intracellular concentrations of folate. Three transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Mar 2011]

SLC19A1 Gene-Disease associations (from GenCC):

• combined immunodeficiency

  Inheritance: AR Classification: MODERATE Submitted by: PanelApp Australia
• immunodeficiency 114, folate-responsive

  Inheritance: AR Classification: LIMITED Submitted by: ClinGen
• megaloblastic anemia, folate-responsive

  Inheritance: AR Classification: LIMITED Submitted by: PanelApp Australia

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=-0.87).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_194255.4. 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
	SLC19A1	NM_194255.4	MANE Select	c.1151+1035G>C		intron	N/A	NP_919231.1	P41440-1
	SLC19A1	NM_001352512.2		c.1151+1035G>C		intron	N/A	NP_001339441.1	P41440-1
	SLC19A1	NM_001205207.3		c.1031+1035G>C		intron	N/A	NP_001192136.1	P41440-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SLC19A1	ENST00000311124.9	TSL:1 MANE Select	c.1151+1035G>C		intron	N/A	ENSP00000308895.4	P41440-1
	SLC19A1	ENST00000567670.5	TSL:1	c.1151+1035G>C		intron	N/A	ENSP00000457278.1	H3BTQ3
	SLC19A1	ENST00000380010.8	TSL:1	c.1151+1035G>C		intron	N/A	ENSP00000369347.4	P41440-3

Frequencies

GnomAD3 genomes Cov.: 31

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.87
CADD	Benign	1.6
DANN	Benign	0.71
PhyloP100		0.070
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1

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: rs4819128; hg19: chr21-46949649;