chr14-73645050-C-A

Variant names:

• chr14-73645050-C-A
• rs1456527977
• NM_031427.4:c.3+8C>A

Variant summary

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

The NM_031427.4(DNAL1):​c.3+8C>A variant causes a splice region, intron 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. 3/3 splice prediction tools predict no significant impact on normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: DNAL1 NM_031427.4 splice_region, intron
• Scores: Splicing: ADA: 0.002133
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.124
• Publications: 0 publications found

Genes affected

DNAL1 (HGNC:23247): (dynein axonemal light chain 1) This gene encodes an axonemal dynein light chain which functions as a component of the outer dynein arms complex. This complex acts as the molecular motor that provides the force to move cilia in an ATP-dependent manner. The encoded protein is expressed in tissues with motile cilia or flagella and may be involved in the movement of sperm flagella. Alternate splicing results in multiple transcript variants.[provided by RefSeq, Jan 2011]

DNAL1 Gene-Disease associations (from GenCC):

• primary ciliary dyskinesia 16

  Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), Ambry Genetics
• 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 (BayesDel_noAF=-0.34).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_031427.4. 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
	DNAL1	NM_031427.4	MANE Select	c.3+8C>A		splice_region intron	N/A	NP_113615.2	Q4LDG9-1
	DNAL1	NM_001201366.2		c.-161+8C>A		splice_region intron	N/A	NP_001188295.1	Q4LDG9-3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DNAL1	ENST00000553645.7	TSL:1 MANE Select	c.3+8C>A		splice_region intron	N/A	ENSP00000452037.1	Q4LDG9-1
	DNAL1	ENST00000554871.5	TSL:1	c.-161+8C>A		splice_region intron	N/A	ENSP00000451834.1	Q4LDG9-3
	DNAL1	ENST00000893991.1		c.3+8C>A		splice_region intron	N/A	ENSP00000564050.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00 AC: 0 AN: 238428 AF XY: 0.00

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: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.34
CADD	Benign	16
DANN	Benign	0.80
PhyloP100		0.12
PromoterAI		0.042	Neutral

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.0021
dbscSNV1_RF	Benign	0.13
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: rs1456527977; hg19: chr14-74111753;