SHOX gene variants: growth hormone/insulin-like growth factor-1 status and response to growth hormone treatment.

Context: Short stature homeobox-containing gene (SHOX) variants of unknown clinical significance occur frequently among children with short stature, yet their growth hormone (GH)/insulin-like growth factor-1 (IGF-1) status and response to GH have not been studied.

Objective: To define GH and IGF-1 status in children with SHOX variants and assess their response to GH.

Patients And Methods: This is a retrospective review of children with short stature.

Racial/ethnic differences in clinical and biochemical type 2 diabetes mellitus risk factors in children.

Objective: To examine whether periadolescent children demonstrate the significant racial/ethnic differences in body fatness relative to BMI and in the prevalence and relationship of body composition to risk factors for type 2 diabetes (T2DM) as in adults.

Design And Methods: Family history of obesity and T2DM, anthropometry, insulin sensitivity and secretory capacity, lipids, and cytokines (IL-6, CRP, TNF-α, and adiponectin) were examined in a cohort of 994 middle school students (47% male, 53%, female; 12% African American, 14% East Asian, 13% South Asian, 9% Caucasian, 44% Hispanic, and 8% other).

Results: Fractional body fat content was significantly greater at any BMI among South Asians.