Twoinfants in the expanded cohort (one 30 μg recipient and one 60 μgrecipient) presented with severe neutropenia, and one infant (30 μgrecipient) presented with severe increased alanine transaminase concentration.Infants with neutropenia and increased alanine transaminase concentration after thefirst injection did not receive further injections because of the temporalrelationship between occurrence of the event and administration of the injection.These events were not assessed as serious and resolved spontaneously. Here, GPT is linked to neutropenia.