Task: Answer Verification
Input (English): Question: Does identical ATP1A3 mutation cause alternating hemiplegia of childhood and rapid-onset dystonia parkinsonism phenotypes?
Answer: The discordance of these phenotypes suggests that there are other undiscovered environmental, genetic, or epigenetic factors influencing the development of alternating hemiplegia of childhood or rapid-onset dystonia parkinsonism.
Output (English): yes