Besides safety concerns, many people were skeptical about the effects of this drug, the reason being that the link between allergies and the dread ailment asthma had never been verified. So at first, there were doubts as to whether anti-IgE would treat asthma.
除了安全性的憂慮外，更多人不看好這個藥物的成效，原因是，最令人聞之色變的哮喘，與過敏的關連一直未被證實，因此一開始，Anti-IgE 能否治療哮喘仍受到質疑。