<unk>  (SGS) is a congenital neurodegenerative terminal syndrome. It was first described in 1978 by Albert<unk>  (1944–) and Andreas Giedion (1925–) as a syndrome with severe midface retraction, skull anomalies, renal anomalies (hydronephrosis) and other anomalies. Babies born with<unk>  have severe mental retardation, growth retardation (unless fed through a feeding tube) and global developmental delay.
Schinzel–Giedion syndrome
Bardet–Biedl syndrome
Langer–Giedion syndrome
Daentl Townsend Siegel syndrome
Beckwith–Wiedemann syndrome
Letterer–Siwe disease
Prader–Willi syndrome
Weismann-Netter–Stuhl syndrome