2-189564186-C-A

Variant names:

• chr2-189564186-C-A
• rs104893664
• NM_014585.6:c.800G>T
• SLC40A1 p.Gly267Val

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 4P and 2B. PM2 PM5 BP4_Moderate

The NM_014585.6(SLC40A1):​c.800G>T​(p.Gly267Val) 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 benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G267D) has been classified as Pathogenic.

• Frequency: Genomes: not found (cov: 32)
• Consequence: SLC40A1 NM_014585.6 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.08
• Publications: 0 publications found

Genes affected

SLC40A1 (HGNC:10909): (solute carrier family 40 member 1) The protein encoded by this gene is a cell membrane protein that may be involved in iron export from duodenal epithelial cells. Defects in this gene are a cause of hemochromatosis type 4 (HFE4). [provided by RefSeq, Jul 2008]

SLC40A1 Gene-Disease associations (from GenCC):

• hemochromatosis type 4

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

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr2-189564186-C-T is described in ClinVar as Pathogenic. ClinVar VariationId is 5418.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP4: Computational evidence support a benign effect (MetaRNN=0.12637764).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_014585.6. 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
	SLC40A1	NM_014585.6	MANE Select	c.800G>T	p.Gly267Val	missense	Exon 7 of 8	NP_055400.1	Q9NP59

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SLC40A1	ENST00000261024.7	TSL:1 MANE Select	c.800G>T	p.Gly267Val	missense	Exon 7 of 8	ENSP00000261024.3	Q9NP59
	SLC40A1	ENST00000852923.1		c.800G>T	p.Gly267Val	missense	Exon 9 of 10	ENSP00000522982.1
	SLC40A1	ENST00000852924.1		c.800G>T	p.Gly267Val	missense	Exon 8 of 9	ENSP00000522983.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.081
BayesDel_addAF	Benign	0.0070	T
BayesDel_noAF	Benign	-0.23
CADD	Benign	15
DANN	Benign	0.88
DEOGEN2	Uncertain	0.51	D
Eigen	Benign	-0.67
Eigen_PC	Benign	-0.49
FATHMM_MKL	Benign	0.66	D
LIST_S2	Benign	0.67	T
M_CAP	Uncertain	0.16	D
MetaRNN	Benign	0.13	T
MetaSVM	Benign	-0.36	T
MutationAssessor	Benign	1.1	L
PhyloP100		1.1
PrimateAI	Benign	0.36	T
PROVEAN	Benign	-0.74	N
REVEL	Benign	0.23
Sift	Benign	0.17	T
Sift4G	Benign	0.63	T
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.044
gMVP		0.51
Mutation Taster		=59/41	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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs104893664;

hg19: chr2-190428912;