chr17-74281941-G-C

Variant names:

• chr17-74281941-G-C
• rs151176313
• NM_023036.6:c.124G>C

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_023036.6(DNAI2):​c.124G>C​(p.Val42Leu) 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. V42M) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: DNAI2 NM_023036.6 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.553
• Publications: 4 publications found

Genes affected

DNAI2 (HGNC:18744): (dynein axonemal intermediate chain 2) The protein encoded by this gene belongs to the dynein intermediate chain family, and is part of the dynein complex of respiratory cilia and sperm flagella. Mutations in this gene are associated with primary ciliary dyskinesia type 9. Alternatively spliced transcript variants encoding different isoforms have been noted for this gene. [provided by RefSeq, Mar 2010]

DNAI2 Gene-Disease associations (from GenCC):

• primary ciliary dyskinesia 9

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae), ClinGen
• primary ciliary dyskinesia

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.11173466).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_023036.6. 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
	DNAI2	NM_023036.6	MANE Select	c.124G>C	p.Val42Leu	missense	Exon 2 of 14	NP_075462.3
	DNAI2	NM_001353167.2		c.124G>C	p.Val42Leu	missense	Exon 2 of 15	NP_001340096.1
	DNAI2	NM_001172810.3		c.124G>C	p.Val42Leu	missense	Exon 2 of 14	NP_001166281.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DNAI2	ENST00000311014.11	TSL:1 MANE Select	c.124G>C	p.Val42Leu	missense	Exon 2 of 14	ENSP00000308312.6
	DNAI2	ENST00000579490.5	TSL:1	c.295G>C	p.Val99Leu	missense	Exon 1 of 13	ENSP00000464197.1
	DNAI2	ENST00000446837.2	TSL:1	c.124G>C	p.Val42Leu	missense	Exon 1 of 13	ENSP00000400252.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 12

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Benign	-0.081	T
BayesDel_noAF	Benign	-0.35
CADD	Benign	14
DANN	Uncertain	0.99
DEOGEN2	Benign	0.016	T
Eigen	Benign	-0.42
Eigen_PC	Benign	-0.36
FATHMM_MKL	Benign	0.26	N
LIST_S2	Benign	0.85	T
M_CAP	Benign	0.016	T
MetaRNN	Benign	0.11	T
MetaSVM	Benign	-0.83	T
MutationAssessor	Benign	1.5	L
PhyloP100		0.55
PrimateAI	Benign	0.41	T
PROVEAN	Benign	-1.4	N
REVEL	Benign	0.055
Sift	Uncertain	0.017	D
Sift4G	Uncertain	0.060	T
Polyphen		0.028	B
Vest4		0.27
MutPred		0.32		Gain of loop (P = 0.0166)
MVP		0.61
MPC		0.25
ClinPred		0.59	D
GERP RS		2.1
PromoterAI		0.010	Neutral
Varity_R		0.087
gMVP		0.44
Mutation Taster		=93/7	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

Other links and lift over

dbSNP: rs151176313; hg19: chr17-72278080;