Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Cohen syndrome ?
    ### Response:
    Cohen syndrome is a congenital (present since birth) condition that was first described in 1973 by Dr. M.M. Cohen, Jr. When the syndrome was first described, it was believed that its main features were obesity, hypotonia (low muscle tone), intellectual disabilities, distinctive facial features with prominent upper central teeth and abnormalities of the hands and feet.
    