NM_018051.5:c.2503_2505dupAGG

Variant names:

• chr7-158930469-G-GGGA
• rs1554478948
• NM_018051.5:c.2503_2505dupAGG

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2 PM4_Supporting PP5

The NM_018051.5(DYNC2I1):​c.2503_2505dupAGG​(p.Arg835dup) variant causes a conservative inframe insertion change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Likely pathogenic (no stars).

• Frequency: Genomes: not found (cov: 33)
• Consequence: DYNC2I1 NM_018051.5 conservative_inframe_insertion
• Clinical Significance: Pathogenic/Likely pathogenic no assertion criteria provided P:2
• Conservation: PhyloP100: 6.53
• Publications: 0 publications found

Genes affected

DYNC2I1 (HGNC:21862): (dynein 2 intermediate chain 1) This gene encodes a member of the WD repeat protein family. WD repeats are minimally conserved regions of approximately 40 amino acids typically bracketed by gly-his and trp-asp (GH-WD) and may facilitate the formation of heterotrimeric or multiprotein complexes. Members of this family are involved in a variety of cellular processes including cell cycle progression, signal transduction, apoptosis, and gene regulation. The encoded protein contains four WD repeats and may play a role in the formation of cilia. Mutations in this gene have been associated with short-rib polydactyly and Jeune syndromes. [provided by RefSeq, Mar 2014]

DYNC2I1 Gene-Disease associations (from GenCC):

• short-rib thoracic dysplasia 8 with or without polydactyly

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Laboratory for Molecular Medicine, Labcorp Genetics (formerly Invitae), G2P
• Jeune syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• short rib-polydactyly syndrome, Verma-Naumoff type

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM4: Nonframeshift variant in NON repetitive region in NM_018051.5. Strenght limited to Supporting due to length of the change: 1aa.
• PP5: Variant 7-158930469-G-GGGA is Pathogenic according to our data. Variant chr7-158930469-G-GGGA is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 446630.Status of the report is no_assertion_criteria_provided, 0 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_018051.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DYNC2I1	NM_018051.5	MANE Select	c.2503_2505dupAGG	p.Arg835dup	conservative_inframe_insertion	Exon 21 of 25	NP_060521.4
	DYNC2I1	NM_001350914.2		c.2365_2367dupAGG	p.Arg789dup	conservative_inframe_insertion	Exon 21 of 25	NP_001337843.1
	DYNC2I1	NM_001350915.2		c.1930_1932dupAGG	p.Arg644dup	conservative_inframe_insertion	Exon 20 of 24	NP_001337844.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DYNC2I1	ENST00000407559.8	TSL:1 MANE Select	c.2503_2505dupAGG	p.Arg835dup	conservative_inframe_insertion	Exon 21 of 25	ENSP00000384290.3
	DYNC2I1	ENST00000444851.5	TSL:1	n.*92_*94dupAGG		non_coding_transcript_exon	Exon 16 of 20	ENSP00000392608.1
	DYNC2I1	ENST00000444851.5	TSL:1	n.*92_*94dupAGG		3_prime_UTR	Exon 16 of 20	ENSP00000392608.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 33

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:2

Revision: no assertion criteria provided

Submissions by phenotype

Asphyxiating thoracic dystrophy 3 Pathogenic:2

University of Washington Center for Mendelian Genomics, University of Washington

Significance: Likely pathogenic

Review Status: no assertion criteria provided

Collection Method: research

Jun 01, 2017

Dan Cohn Lab, University Of California Los Angeles

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: research

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		6.5
Mutation Taster		=66/34	disease causing (ClinVar)

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs1554478948; hg19: chr7-158723160;