Complex sentence: To have partial agonism at the 5ht1A-receptor can give an absence of weight gain in an antipsychotic, this is very relevant for ziprasidone, but it creates a risk for a prolonged QTc interval.
Split into simpler sentences: To have partial agonism at the 5-HT 1A receptor can yield absence of weight gain in an antipsychotic. This is very relevant for ziprasidone, but it creates a risk for a prolonged QTc interval.