| A rare Y chromosome number anomaly with a variable phenotype mainly characterized by moderate to severe intellectual disability, speech delay, hypotonia, and mild dysmorphic features, including facial asymmetry, hypertelorism, bilateral low set lop ears, and micrognathia. Skeletal abnormalities (such as skull deformities, radioulnar synostosis, elbow flexion, clinodactyly, brachydactyly) and behavioral problems have also been associated with this condition. Genitalia are normal at birth, although hypogonadism and azoospermia has been reported in adults. |
