Not the spasms
The brain pathology that caused the infantile spasms confers a greater risk of autism
, especially if it's tuberous sclerosis
A cause is found in > 75% of cases; almost half have a prenatal cause like abnormal development of the cortex of the brain, metabolic syndromes, or genetic syndromes. West syndrome itself can cause regression or arrest of development. 90% have first spasms before 12 mos.