7-726783-G-C

Variant names:

• chr7-726783-G-C
• rs1054283683
• NM_017802.4:c.63G>C

Variant summary

Our verdict is Benign. The variant received -11 ACMG points: 2P and 13B. PM2 BP4_Strong BP6_Very_Strong BP7

The NM_017802.4(DNAAF5):​c.63G>C​(p.Thr21Thr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000132 in 151,984 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 Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.000013 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: DNAAF5 NM_017802.4 synonymous
• Clinical Significance: Likely benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: -0.265
• Publications: 0 publications found

Genes affected

DNAAF5 (HGNC:26013): (dynein axonemal assembly factor 5) The protein encoded by this gene is essential for the preassembly or stability of axonemal dynein arms, and is found only in organisms with motile cilia and flagella. Mutations in this gene are associated with primary ciliary dyskinesia-18, a disorder characterized by abnormalities of motile cilia. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Feb 2013]

PRKAR1B (HGNC:9390): (protein kinase cAMP-dependent type I regulatory subunit beta) The protein encoded by this gene is a regulatory subunit of cyclic AMP-dependent protein kinase A (PKA), which is involved in the signaling pathway of the second messenger cAMP. Two regulatory and two catalytic subunits form the PKA holoenzyme, disbands after cAMP binding. The holoenzyme is involved in many cellular events, including ion transport, metabolism, and transcription. Several transcript variants encoding the same protein have been found for this gene. [provided by RefSeq, Aug 2015]

PRKAR1B Gene-Disease associations (from GenCC):

• Marbach-Schaaf neurodevelopmental syndrome

  Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• PRKAR1B-related neurodegenerative dementia with intermediate filaments

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Benign. The variant received -11 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.99).
• BP6: Variant 7-726783-G-C is Benign according to our data. Variant chr7-726783-G-C is described in ClinVar as Likely_benign. ClinVar VariationId is 1753322.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=-0.265 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_017802.4. 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
	DNAAF5	NM_017802.4	MANE Select	c.63G>C	p.Thr21Thr	synonymous	Exon 1 of 13	NP_060272.3
	PRKAR1B	NM_001164760.2	MANE Select	c.-23+427C>G		intron	N/A	NP_001158232.1	P31321
	PRKAR1B	NM_001164758.2		c.-23+807C>G		intron	N/A	NP_001158230.1	P31321

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DNAAF5	ENST00000297440.11	TSL:1 MANE Select	c.63G>C	p.Thr21Thr	synonymous	Exon 1 of 13	ENSP00000297440.6	Q86Y56-1
	PRKAR1B	ENST00000537384.6	TSL:5 MANE Select	c.-23+427C>G		intron	N/A	ENSP00000440449.1	P31321
	PRKAR1B	ENST00000403562.5	TSL:1	c.-23+807C>G		intron	N/A	ENSP00000385349.1	P31321

Frequencies

GnomAD3 genomes AF: 0.0000132 AC: 2 AN: 151984 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000483

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1126966 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 539620

African (AFR) AF: 0.00 AC: 0 AN: 23238

American (AMR) AF: 0.00 AC: 0 AN: 8886

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 15170

East Asian (EAS) AF: 0.00 AC: 0 AN: 26796

South Asian (SAS) AF: 0.00 AC: 0 AN: 32966

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 24132

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 3084

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 947210

Other (OTH) AF: 0.00 AC: 0 AN: 45484

GnomAD4 genome AF: 0.0000132 AC: 2 AN: 151984 Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2 AN XY: 74222

African (AFR) AF: 0.0000483 AC: 2 AN: 41432

American (AMR) AF: 0.00 AC: 0 AN: 15276

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5166

South Asian (SAS) AF: 0.00 AC: 0 AN: 4838

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10558

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 314

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 67926

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000189

ClinVar

ClinVar submissions

Significance: Likely benign

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	-	2	Primary ciliary dyskinesia (2)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.99
CADD	Benign	3.4
DANN	Benign	0.56
PhyloP100		-0.27
PromoterAI		-0.012	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1

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: rs1054283683; hg19: chr7-766420;