<unk> , discovered in 1971<unk> , Graham, Scott, Boner, & Smith), is characterized by unusual accelerated skeletal maturation (usually starting before birth) and symptoms like conspicuous physical characteristics, respiratory difficulties, and mental retardation. Cases described in the literature show a clinical variability regarding related symptoms. For instance, respiratory difficulties are ranging from absent to severe difficulties.
Marshall–Smith syndrome
Smith–Magenis syndrome
Smith Martin Dodd syndrome
Langer–Giedion syndrome
Bardet–Biedl syndrome
Wilson–Turner syndrome
Miller–Dieker syndrome
Rothmund–Thomson syndrome