NM_012144.4:c.2045T>C

Variant names:

• chr9-34520701-T-C
• rs138460682
• NM_012144.4:c.2045T>C

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_012144.4(DNAI1):​c.2045T>C​(p.Ile682Thr) variant causes a missense change. The variant allele was found at a frequency of 0.0000554 in 1,551,600 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. I682I) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.00014 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000046 (0 hom.)
• Consequence: DNAI1 NM_012144.4 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:4
• Conservation: PhyloP100: 5.18
• Publications: 0 publications found

Genes affected

DNAI1 (HGNC:2954): (dynein axonemal intermediate chain 1) This gene encodes a member of the dynein intermediate chain family. The encoded protein is part of the dynein complex in respiratory cilia. The inner- and outer-arm dyneins, which bridge between the doublet microtubules in axonemes, are the force-generating proteins responsible for the sliding movement in axonemes. The intermediate and light chains, thought to form the base of the dynein arm, help mediate attachment and may also participate in regulating dynein activity. Mutations in this gene result in abnormal ciliary ultrastructure and function associated with primary ciliary dyskinesia and Kartagener syndrome. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2013]

DNAI1 Gene-Disease associations (from GenCC):

• primary ciliary dyskinesia 1

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

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.15934876).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_012144.4. 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
	DNAI1	NM_012144.4	MANE Select	c.2045T>C	p.Ile682Thr	missense	Exon 20 of 20	NP_036276.1
	DNAI1	NM_001281428.2		c.2057T>C	p.Ile686Thr	missense	Exon 20 of 20	NP_001268357.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DNAI1	ENST00000242317.9	TSL:1 MANE Select	c.2045T>C	p.Ile682Thr	missense	Exon 20 of 20	ENSP00000242317.4
	DNAI1	ENST00000878474.1		c.2138T>C	p.Ile713Thr	missense	Exon 21 of 21	ENSP00000548533.1
	DNAI1	ENST00000614641.4	TSL:5	c.2057T>C	p.Ile686Thr	missense	Exon 20 of 20	ENSP00000480538.1

Frequencies

GnomAD3 genomes AF: 0.000145 AC: 22 AN: 152046 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.000193

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000131

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000162

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.000115 AC: 18 AN: 156096 AF XY: 0.0000973

Gnomad AFR exome AF: 0.000228

Gnomad AMR exome AF: 0.000364

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000166

Gnomad OTH exome AF: 0.000226

GnomAD4 exome AF: 0.0000457 AC: 64 AN: 1399436 Hom.: 0 Cov.: 31 AF XY: 0.0000507 AC XY: 35 AN XY: 690238

African (AFR) AF: 0.000222 AC: 7 AN: 31600

American (AMR) AF: 0.000308 AC: 11 AN: 35704

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25180

East Asian (EAS) AF: 0.0000560 AC: 2 AN: 35740

South Asian (SAS) AF: 0.000215 AC: 17 AN: 79236

European-Finnish (FIN) AF: 0.0000203 AC: 1 AN: 49294

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5690

European-Non Finnish (NFE) AF: 0.0000232 AC: 25 AN: 1078984

Other (OTH) AF: 0.0000172 AC: 1 AN: 58008

GnomAD4 genome AF: 0.000145 AC: 22 AN: 152164 Hom.: 0 Cov.: 32 AF XY: 0.000121 AC XY: 9 AN XY: 74406

African (AFR) AF: 0.000193 AC: 8 AN: 41484

American (AMR) AF: 0.000131 AC: 2 AN: 15284

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3466

East Asian (EAS) AF: 0.00 AC: 0 AN: 5180

South Asian (SAS) AF: 0.000207 AC: 1 AN: 4822

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10620

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.000162 AC: 11 AN: 67988

Other (OTH) AF: 0.00 AC: 0 AN: 2114

Alfa AF: 0.0000795 Hom.: 0

Bravo AF: 0.000144

ESP6500AA AF: 0.000249 AC: 1

ESP6500EA AF: 0.000130 AC: 1

ExAC AF: 0.0000516 AC: 3

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	3	-	Primary ciliary dyskinesia (3)
-	1	-	DNAI1-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Benign	-0.23	T
BayesDel_noAF	Benign	-0.25
CADD	Uncertain	24
DANN	Uncertain	0.98
DEOGEN2	Benign	0.031	T
Eigen	Uncertain	0.36
Eigen_PC	Uncertain	0.42
FATHMM_MKL	Uncertain	0.85	D
LIST_S2	Uncertain	0.88	D
M_CAP	Benign	0.037	D
MetaRNN	Benign	0.16	T
MetaSVM	Benign	-0.42	T
MutationAssessor	Uncertain	2.2	M
PhyloP100		5.2
PrimateAI	Uncertain	0.73	T
PROVEAN	Uncertain	-2.4	N
REVEL	Uncertain	0.39
Sift	Benign	0.087	T
Sift4G	Benign	0.15	T
Polyphen		0.90	P
Vest4		0.39
MVP		0.91
MPC		0.19
ClinPred		0.11	T
GERP RS		5.5
Varity_R		0.13
gMVP		0.43
Mutation Taster		=74/26	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs138460682; hg19: chr9-34520699;