Lack of Catch-Up Growth with Growth Hormone Treatment in a Child Born Small for Gestational Age Leading to a Diagnosis of Noonan Syndrome with a Pathogenic PTPN11 Variant

Table 2

Annual growth parameters.

Year	Height standard deviations^a below mean for age and sex	Growth rate (cm/year)
0	−2.9	—
1	−2.5	7.5
2	−2.2	6.7
3	−2.2	4.5
4	−2.2	5.1
5	−2.5	5.1

^aHeight standard deviations refers to the number of standard deviations below the mean height for age and sex.