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Table 1 Review genomic and clinical information on patients with duplication involving GRB10

From: FGFR3 gene mutation plus GRB10 gene duplication in a patient with achondroplasia plus growth delay with prenatal onset

Patient/source

Our patient

Patients TB/LB from Joyce et al. [13]

Patient DP from Monk et al. [17]

Patients HC/AC from Monk et al. [16]

Patient from Eggermann et al. [6] (decipher 285981)

Decipher 289205

Decipher 276327

ISCA nssv579045

Genomic location (hg19)

chr7:50654827-5122921

chr7:42029531–51138357

(D7S691-D7S242)

chr7:40742989–50861159 (D7S1769-GRB10)

chr7:41392336–54000000 (RP5-953B5-7p11.2)

chr7:47034222–52175639

chr7:50713413-50982532

chr7:43566637-51282735

chr7:33367924-61831899

Duplication size

574Kb

~10 cM

~10 cM

>10 cM

5.1 Mb

270Kb

7.72 Mb

28.5 Mb

Inheritance/orign

de novo/maternal

LB: maternal

de novo/maternal

AC: maternal

de novo/paternal

inherited/paternal

de novo/unknown

unknown

TB: paternal

HC: unknown

Phenotype

SRS

SRS

SRS

SRS-like

overgrowth, DD, microcephaly, seizure

hypotonia, GDD

muscular hypotonia

FTT, GDD, large eyes, microcephaly, short stature, triangular face

Detection method

array

karyotype/FISH

karyotype/FISH

karyotype/FISH

array

array

array

array

Genes involved (Refseq)

GRB10 and part of COBL

>50 genes

>50 genes

>50 genes

>20 genes

Part of GRB10

>40 genes

>180 genes

  1. Abbreviation: FISH fluorescence in situ hybridization, DD developmental delay, GDD Global developmental delay, FTT: failure to thrive