Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Laron syndrome ?
    ### Response:
    Laron syndrome is a rare form of short stature that results from the body's inability to use growth hormone, a substance produced by the brain's pituitary gland that helps promote growth. Affected individuals are close to normal size at birth, but they experience slow growth from early childhood that results in very short stature.
    