| Phenotype details |
height SD -2.32, weight SD -2.58, OFC SD -0.4; motor delay; speech delay; severe intellectual disability; facial dysmorphism; no hearing loss; no endocrine anomalies; hypotonia, decreased muscle bulk, proximal weakness, areflexia, non-ambulatory; sensory motor axonal neuropathy; MRI brain T2 hyperintensities of the central tegmental tract and superior cerebral peduncles, globus palladi, subthalamic nucleus and substantia nigra; unprovoked episodic deterioration in neurologic symptoms, followed by gradual recovery, frequent respiratory infections |