is a neurodevelopmental disorder causing hypotonia, repetitive hand movements, and impaired language.

is a neurodevelopmental disorder with involuntary movements and developmental differences.

is a neurodevelopmental disorder that often causes language delay and seizures.

affects brain development, with small head (microcephaly), cataracts, and kidney problems.

is a neurodevelopmental disorder involving midbrain and hindbrain malformations.

is a neurodevelopmental disorder causing movement, speech, eye, and brain problems.

is a rare disorder causing poor growth, spasticity, and hearing loss.

is a neurodevelopmental disorder causing regression, abnormal movements, speech loss, and seizures.

is a neurodevelopmental disorder with short stature, prominent forehead, and feeding difficulties.

is a rare genetic condition causing developmental delays, spasticity, and poor growth.

is a neurodevelopmental disorder causing speech problems and distinctive facial features.

is a rare genetic condition affecting development, facial features, heart, and bones.

is a rare genetic condition affecting development, facial features, heart, and bones.

is a rare genetic condition affecting development, facial features, heart, and bones.

is a rare genetic disorder affecting skin, hair, and the nervous system.

is a rare tumor arising from nerve-related embryonic tissue.

is a rare cancer that starts in hormone-making nerve cells.

is a rare pancreatic cancer that starts in hormone-making cells.

is a rare childhood lung disease causing fast, difficult breathing.

is a rare tumor that starts in hormone-making neuroendocrine cells.

is a usually slow-growing tumor that starts in the appendix.

is a rare esophageal cancer arising from hormone-producing neuroendocrine cells.

is a rare pancreatic tumor that makes hormones or grows silently.

is a rare tumor that starts in hormone-making neuroendocrine cells.