All are components of Laurence Moon Biedl syndrome, EXCEPT -
In Lawrence Moon - Beidle syndrome the patient is obese, not asthenic
Other features are -

Mental retardation
Retinitis pigmentosa
Polydactyly
Hypogonadotropic hypogonadism (This causes Amenorrhoea)
Digital anomaly
Asthenic built
Mental retardation
Hypogonadism