11-118581318-C-A

Variant names:

• chr11-118581318-C-A
• rs1555074545
• NM_001655.5:c.76C>A

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_001655.5(ARCN1):​c.76C>A​(p.Arg26Arg) variant causes a synonymous change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,888 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: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: ARCN1 NM_001655.5 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.51
• Publications: 0 publications found

Genes affected

ARCN1 (HGNC:649): (archain 1) This gene maps in a region, which include the mixed lineage leukemia and Friend leukemia virus integration 1 genes, where multiple disease-associated chromosome translocations occur. It is an intracellular protein. Archain sequences are well conserved among eukaryotes and this protein may play a fundamental role in eukaryotic cell biology. It has similarities to heat shock proteins and clathrin-associated proteins, and may be involved in vesicle structure or trafficking. [provided by RefSeq, Jul 2008]

ARCN1 Gene-Disease associations (from GenCC):

• short stature, rhizomelic, with microcephaly, micrognathia, and developmental delay

  Inheritance: AD Classification: STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.1).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001655.5. 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
	ARCN1	NM_001655.5	MANE Select	c.76C>A	p.Arg26Arg	synonymous	Exon 2 of 10	NP_001646.2
	ARCN1	NM_001425073.1		c.76C>A	p.Arg26Arg	synonymous	Exon 2 of 11	NP_001412002.1
	ARCN1	NM_001425074.1		c.76C>A	p.Arg26Arg	synonymous	Exon 2 of 10	NP_001412003.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ARCN1	ENST00000264028.5	TSL:1 MANE Select	c.76C>A	p.Arg26Arg	synonymous	Exon 2 of 10	ENSP00000264028.4	P48444-1
	ARCN1	ENST00000359415.8	TSL:1	c.199C>A	p.Arg67Arg	synonymous	Exon 3 of 11	ENSP00000352385.4	B0YIW6
	ARCN1	ENST00000935081.1		c.76C>A	p.Arg26Arg	synonymous	Exon 2 of 11	ENSP00000605140.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000398 AC: 1 AN: 251480 AF XY: 0.00000736

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 FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000879

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461888 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 727248

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1112008

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.10
CADD	Benign	12
DANN	Benign	0.93
PhyloP100		7.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.8
Mutation Taster		=14/86	disease causing

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: rs1555074545; hg19: chr11-118452033;