PROP1 gene mutations lead to multiple pituitary hormone deficiency including impaired secretion of growth hormone, TSH, prolactin, FSH/LH and ACTH. Abnormal pituitary morphology is an additional feature raging from pituitary hypoplasia or empty sella to pituitary hyperplasia.
The distribution of findings according to age at first examination among 17 Czech patients with PROP1 mutation supports the hypothesis on pituitary hyperplasia within the first years of life, followed by a spontaneous regression leading to pituitary hypoplasia or empty sella