1-25714471-T-G

Variant names:

• chr1-25714471-T-G
• rs2786873
• NM_020379.4:c.637+27935T>G

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_020379.4(MAN1C1):​c.637+27935T>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.224 in 152,086 control chromosomes in the GnomAD database, including 5,806 homozygotes. 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: 𝑓 0.22 (5806 hom., cov: 32)
• Consequence: MAN1C1 NM_020379.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.09
• Publications: 1 publications found

Genes affected

MAN1C1 (HGNC:19080): (mannosidase alpha class 1C member 1) Predicted to enable mannosyl-oligosaccharide 1,2-alpha-mannosidase activity. Predicted to be involved in N-glycan processing. Located in extracellular exosome. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.89).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.469 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MAN1C1	NM_020379.4	c.637+27935T>G		intron_variant	Intron 2 of 11	ENST00000374332.9	NP_065112.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MAN1C1	ENST00000374332.9	c.637+27935T>G		intron_variant	Intron 2 of 11	1	NM_020379.4	ENSP00000363452.4
MAN1C1	ENST00000263979.7	c.97+27935T>G		intron_variant	Intron 3 of 12	5		ENSP00000263979.3
MAN1C1	ENST00000374329.1	c.-51+4326T>G		intron_variant	Intron 1 of 10	2		ENSP00000363449.1
MAN1C1	ENST00000473891.1	n.35+27935T>G		intron_variant	Intron 1 of 4	4

Frequencies

GnomAD3 genomes AF: 0.224 AC: 33983 AN: 151968 Hom.: 5786 Cov.: 32

Gnomad AFR AF: 0.475

Gnomad AMI AF: 0.0724

Gnomad AMR AF: 0.238

Gnomad ASJ AF: 0.112

Gnomad EAS AF: 0.179

Gnomad SAS AF: 0.102

Gnomad FIN AF: 0.0963

Gnomad MID AF: 0.127

Gnomad NFE AF: 0.109

Gnomad OTH AF: 0.210

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

GnomAD4 genome AF: 0.224 AC: 34049 AN: 152086 Hom.: 5806 Cov.: 32 AF XY: 0.222 AC XY: 16509 AN XY: 74372

African (AFR) AF: 0.475 AC: 19666 AN: 41412

American (AMR) AF: 0.238 AC: 3632 AN: 15276

Ashkenazi Jewish (ASJ) AF: 0.112 AC: 390 AN: 3472

East Asian (EAS) AF: 0.179 AC: 925 AN: 5170

South Asian (SAS) AF: 0.100 AC: 482 AN: 4820

European-Finnish (FIN) AF: 0.0963 AC: 1021 AN: 10606

Middle Eastern (MID) AF: 0.122 AC: 36 AN: 294

European-Non Finnish (NFE) AF: 0.108 AC: 7378 AN: 68010

Other (OTH) AF: 0.214 AC: 453 AN: 2114

Alfa AF: 0.103 Hom.: 289

Bravo AF: 0.247

Asia WGS AF: 0.211 AC: 736 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.89
CADD	Benign	0.0060
DANN	Benign	0.64
PhyloP100		-2.1
Mutation Taster		=100/0	polymorphism (auto)

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: rs2786873; hg19: chr1-26040962; COSMIC: COSV56043348;