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Table 2 Genetic findings in patients with mutations in GMPPB

From: Broad phenotypic spectrum and genotype-phenotype correlations in GMPPB-related dystroglycanopathies: an Italian cross-sectional study

 

Mutation

SIFT (score)

Polyphen 2 score

Protein domain

Amino acid conservation

Reference

P1

p.I219T

p.R287Q

Deleterious (0.04)

Tolerated (0.27)

Benign 0,267

Benign 0,117

N-TC domain

LbH

moderately conserved

weakly conserved

[28]

[11]

P2

p.T153I

p.Q234*

Tolerated (0.22)

na

Possibly damaging 0,812

na

N-TC domain

na

weakly conserved

weakly conserved

[14]

This work

P3

p.K31E

p.G174S

Deleterious (0.02)

Deleterious (0)

Probably damaging 0,992

Probably damaging 1,00

N-TC domain

N-TC domain

highly conserved

highly conserved

This work

This work

P4

p.T153I

p.P32L

Tolerated (0.22)

Deleterious (0)

Possibly damaging 0,812

Probably damaging 1,00

N-TC domain

N-TC domain

weakly conserved

highly conserved

[14]

[11]

P5

p.P32L

p.R287Q

Deleterious (0)

Tolerated (0.27)

Probably damaging 1,00

Benign 0,117

N-TC domain

LbH

highly conserved

weakly conserved

[11]

[11]

P6

p.G315S

p.D27H

Deleterious (0,01)

Deleterious (0,02)

Probably damaging 0,989

Benign 0,089

LbH

N-TC domain

highly conserved

weakly conserved

[15]

[11]

P7

p.S168F

p.Q234*

Deleterious (0,01)

na

Probably damaging 1,00

na

N-TC domain

na

highly conserved

weakly conserved

This work

This work

P8

p.R243W

p.P32L

Deleterious (0,02)

Deleterious (0)

Benign (0,006)

Probably damaging 1,00

na

N-TC domain

highly conserved

highly conserved

[26]

[11]

P9

p.D27H

p.V330I

Deleterious (0,02)

Deleterious (0)

Benign 0,089

Probably damaging (0,981)

N-TC domain

na

weakly conserved

[11]

[27]

P10

p.D27H

p.V330I

Deleterious (0,02)

Deleterious (0)

Benign 0,089

Probably damaging (0,981)

N-TC domain

na

weakly conserved

highly conserved

[11]

[27]

P11

p.R288G

p.C285YfsX19

Deleterious (0.01)

na

Probably damaging (0.980)

LbH

LbH

moderately conserved

weakly conserved

This work

This work

P12

p.G220R

p.R287Q

Deleterious (0)

Tolerated (0.27)

Probably damaging (0.999)

Benign 0,117

N-TC domain

LbH

highly conserved

weakly conserved

This work

[11]

P13

p.R287Q

p.V330I

Tolerated (0.27)

Damaging(0)

Benign 0,117

Probably damaging (0,981)

LbH

na

weakly conserved

highly conserved

[11]

[27]

  1. Legend: na not applicable, N-TC domain N terminal catalytic domain, LbH Left-handed parallel beta-Helix domain. Novel mutations are in bold
  2. *indicates in genetics the presence of a STOP CODON