The <i>GATA-4</i> gene, located on chromosome 8p23.1, encodes GATA-binding protein 4 (GATA-4), a transcription factor that is essential for cardiac and gonadal development and sexual differentiation.<h4>Case description</h4>A child with a history of micropenis and cryptorchidism. Here, GATA4 is linked to cryptorchidism.