The FDA's response after half a year is that they "have not been able to complete [their] final responses at this time."

After a study, published in the Journal of Trace Elements in Medicine and Biology, showed that numerous childhood vaccines have far more or far less aluminum adjuvant than listed on their FDA approved product label, ICAN submitted a petition to the FDA with an extremely reasonable demand:

that FDA publicly release documentation sufficient to establish that the aluminum content in certain vaccines is consistent with the amount stated in its labeling and, if unable to do so, pause distribution of those vaccines until the Agency has confirmed and publicly released documentation sufficient to establish that the aluminum content in the vaccines is consistent with the amount stated in its labeling.