Table 2 Cases with known gene, novel mutation mechanisms described in this manuscript for the first time

From: Diagnostic implications of pitfalls in causal variant identification based on 4577 molecularly characterized families

Pedigree

ID number

Gene

Disease Name

Phenotype-specific OMIM ID

Variant

Zygosity

Known gene, novel mutation mechanism

F141

08DG-00413

OTX2

OTX2-related inherited retinal degeneration with female infertility

Not listed

NM_001270525.2:r.98_273del;p.(Pro34Metfs*3)

Homozygous

Biallelic rather than monoallelic

F2924

12DG1193

NOTCH2

NOTCH2-related retinitis pigmentosa

Not listed

NM_024408.4:c.1619C>T;p.(Pro540Leu)

Homozygous

Biallelic rather than monoallelic

F3108

12DG1912

FOXE3

Anterior segment dysgenesis 2, multiple subtypes

610256

NM_012186.3:c.720 C > A;p.(Cys240*)

Homozygous

Biallelic rather than monoallelic

F3151

12DG2122

VPS13B

Cohen syndrome

216550

NM_152564.5:c.5783 C > T;p.(Pro1928Leu)

Homozygous

Missense rather than LOF

F4370

14DG1521

RIMS1

Cone-rod dystrophy 7

603649

ENST00000521978.1:c.3143 T > G;p.(Leu1048*)

Homozygous

Biallelic rather than monoallelic

F4422

14DG1734

AKT3

Megalencephaly-polymicrogyria-polydactyly-hydrocephalus syndrome 2

615937

NM_005465.7:c.1393 C > T;p.(Arg465Trp)

Heterozygous (De novo)

Constitutional rather than mosaic

F454

09DG00739

NOTCH2

NOTCH2-related retinitis pigmentosa

Not listed

NM_024408.4:c.1619C>T;p.(Pro540Leu)

Homozygous

Biallelic rather than monoallelic

F4735

15DG0159

COL9A3

Stickler syndrome, type VI

620022

NM_001853.4:c.754 C > T;p.(Arg252*)

Homozygous

Biallelic rather than monoallelic

F531

09DG00980

MAPRE2

Symmetric circumferential skin creases, congenital, 2

616734

NM_001384732.1:c.8150_8151delGA;p.(Gly2717Alafs*40)

Homozygous

Biallelic rather than monoallelic

F5683

16DG1189

MYH9

Macrothrombocytopenia and granulocyte inclusions with or without nephritis or sensorineural hearing loss

155100

NM_002473.6:c.2206 G > A;p.(Gly736Arg)

Homozygous

Biallelic rather than monoallelic

F6666

19DG0767

ABL1

ABL1-related mirror image of CHDSKM

Not listed

NM_005157.6:c.1966_2011dupCCAGCCAAGTCCCCAAAGCCCAGCAATGGGGCTGGGGTCCCCAATG;p.(Gly671Alafs*93)

Homozygous

Biallelic LOF rather than de novo GOF

F8175

PSMMC-0351

PHOX2B

Central hypoventilation syndrome, congenital, 1, with or without Hirschsprung disease

209880

NM_003924.3:c.590del;p.(Gly197Alafs*112)

Heterozygous

De novo LOF rather than repeat expansion

F8309

PSMMC-0377

AKT3

AKT3-related NDD with microcephaly

Not listed

Large deletion chr1:238817161-249224684 involving ZBTB18, HNRNPU, and AKT3

Heterozygous

LOF rather than GOF

F8399

20DG1091

ADSS1

Myopathy, distal, 5

617030

NM_152328.5:c.1073+1− > T

Homozygous

LOF rather than missense

F8485

PSMMC-0385

KCNMA1

KCNMA1-related NDD

Not listed

10q22.3(79364485-79611505)x3

Heterozygous

Triplo-sensitivity

F9597

22DG1526

RHOBTB2

RHOBTB2-related neurodevelopmental disorder

Not listed

NM_015178.3:c.394 C > T;p.(Arg132*)

Homozygous

Biallelic rather than monoallelic

F9792

Fetus of 23DG1304

VPS50

VPS50-related hydrocephalus

Not listed

NM_017667.4:c.1705C>T;p.(Arg569*)

Homozygous

LOF rather than missense

F9145

PSMMC0442

MPL

Thrombocythemia 2

601977

NM_005373.3:c.317 C > T;p.(Pro106Leu)

Homozygous

Biallelic rather than monoallelic

F6329

19DG2474

SCN3A

Epilepsy, familial focal, with variable foci 4

617935

NM_006922.4:c.3003 G > C;p.(Met1001Ile)

Homozygous

Biallelic rather than monoallelic

F7988

20DG0276

ACVR2B

Heterotaxy, visceral, 4, autosomal

613751

NM_001106.4:c.92 A > G;p.(Tyr31Cys)

Homozygous

Biallelic rather than monoallelic

F9176

PSMMC9176

CRYBA4

Cataract 23

610425

NM_001886.3:c.206 T > C;p.(Leu69Pro)

Homozygous

Biallelic rather than monoallelic

F4216

14DG0915

COL2A1

COL2A1-related arthrogryposis

Not listed

NM_001844.5:c.985 C > T;p.(Pro329Ser)

Homozygous

Biallelic rather than monoallelic

F5095

15DG1215

CREBBP

Rubinstein-Taybi syndrome 1

180849

Multi-exon duplication (4–11)

Homozygous

Biallelic rather than monoallelic