This report presents changes of IGFs and IGFBPs in a female infant with partial trisomy 9q in the 12(th) week of life, Studying deficient growth in this hypoplastic infant (birth weight 1405 g, birth length 36 cm) with dysmorphic features, the following changes in IGFs and IGFBPs were detected (mu g/l): IGF-I: 26.5 vs 48.1 in healthy infants; IGF-II: 420 vs 728; IGFBP-2: 931 vs 524; IGFBP3: 800 vs 1070, This demonstrates that IGFs and IGFBPs may reflect individual insufficient growth even at this early age.