Table 1 Summary of molecular and key clinical findings.

From: Biallelic variants in KARS1 are associated with neurodevelopmental disorders and hearing loss recapitulated by the knockout zebrafish

 

F1 IV:1/ F11 V:1/V:2/ V:3/V:4

F2 IV:3

F3 II:2

F4 V:3/V:4

F5 II:1

F6 IV:1

F7 IV:1/IV:4/F8 IV:1 /IV:2/F13 II:2

F9 II:1/ F10 II:4/ F15 II:1

F9 II:1/F15 II:1

F10 II:4

F12 II:1

F14 II:2

F16 II:1

Molecular genetics summary

 

 Chr16 g. position

g.75674175A>G

g.75669866G>C

g.75668181C>G

g.75668081A>G

g.75665680G>A

g.75665629T>C

g.75662474T>A

g.75669880G>A

g.75669683T>A

g.75662504C>T

g.75663371G>A

g.75668082G>A

g.75665702G>A

g.75662486G>A

KARS1 c. position

c.379T>C

c.697C>G

c.889C>G

c.989T>C

c.1073C>T

c.1124A>G

c.1772A>T

c.683C>T

c.774A>T

c.1742G>A

c.1577C>T

c.988C>T

c.1051C>T

c.1760C>T

 KARS1 p. position

F127L

L233V

P297A

L330P

T358M

Y375C

N591I

P228L

R258S

R581Q

A526V

L330F

R351W

T587M

 phyloP

8.92

5.66

9.87

9.34

9.84

8.02

7.95

9.59

0.18

7.77

5.94

5.86

2.14

6.10

 CADD

29.7

22.2

27.0

31

29.4

32

28.1

25.5

25.2

28.6

31

29.4

32

32

 MT

DC

DC

DC

DC

DC

DC

DC

DC

DC

DC

DC

DC

DC

DC

 PP2

PrD

B

PrD

PrD

PrD

PrD

PrD

PrD

PrD

PrD

PrD

PrD

PrD

PrD

 SIFT

D

D

D

D

D

D

D

T

D

D

D

D

D

D

 gnomAD MAF

0

3.98e-6

0

0

4.95e-5

3.98e-6

7.97e-6

1.415e-4

1.971e-5

0

3.184e-5

0

7.070e-6

5.966e-5

 In-house MAFa

1/171,678

0/171,678

1/171,678

1/171,678

18/257,204

3/212,968

1/229,162

39/262,730

3/179,738

1/181,974

0/38,634

2/222,356

3/149,466

17/244,700

Clinical summary

 

 DD

+/+/+/+/+

+

-

+/+

-

+

+/+/+/+/-

+/+/+

+/+

+

+

+

+

+

 ID

+/+/+/+/+

+

-

+/+

-

-

+/+/+/+/-

-/-/NA

-/NA

-

+

+

+

+

 Hearing loss

+/+/+/+/+

+

+

+/+

-

+

+/+/+/+/+

+/NA/+

+/+ 

NA

+ 

+

+

+

 Regression

+/+/-/-/-

+

-

-/-

-

-

-/-/-/-/-

-/+/+

-/+

+

-

-

-

+

 Seizures

+/-/+/-/-

+

-

+/-

-

-

-/-/+/+/+

+/+/+

+/+

+

+

+

+

-

 Ataxia

+/-/-/-/-

-

+

-/-

-

+

+/-/-/-/-

+/-/+

+/+

-

-

+

+

-

 Hypotonia

-/-/-/-/-

-

-

+/+

-

+

+/+/-/+/-

-/-/+

-/+

-

+

+

+

+

 Spasticity

+/+/-/+/+

+

-

-/-

-

-

-/-/-/-/-

+/+/-

+/-

+

-

-

-

+

 Visual impairment

-/+/+/+/-

-

NA

-/-

-

-

-/-/-/-/-

+/+/-

+/-

+

NA

+ 

+

+

 Absent speech

-/+/NA/+/+

-

-

-/+

+

+

+/+/-/-/-

+/+/-

+/-

+

NA

-

-

+

 Mortality

-/-/-/-/-

+

-

-/-

-

-

-/-/-/-/-

-/+/-

-/-

+

+

-

-

+

 Dysmorphic facial features

+/+/+/+/+

+

-

+/+

+

-

+/+/+/+/-

-/-/NA

-/NA

-

-

+

+

-

 Behavioral abnormalities

-/+/-/-/-

-

-

-/+

-

-

+/+/+/+/-

-/-/NA

-/NA

-

-

+

+

-

 Leukodystrophy

+/+/+/+/-

+

+

-/+

-

NA

+/+/-/-/-

+/+/-

+/-

+

+

-

-

-

  1. Genomic coordinates are listed according to GRCh37 genome build, transcript: NM_001130089.1, phyloP scale [-14.1; 6.4].
  2. B benign, D deleterious, DC disease causing, DD developmental delay, F family, ID intellectual disability, MAF  minor allele frequency, MT MutationTaster, NA not assessed, PP2 PolyPhen-2, PrD probably damaging, T tolerated.
  3. aNo homozygous individuals were identified. The in-house database consists of aggregated multiethnic cohorts from study groups.