erlizumab
... that during clinical trials of the experimental drug erlizumab (rhuMAb), four patients suddenly started coughing up blood and later died?
... that during <a href="./Clinical_trial" id="mwE7M" rel="mw:WikiLink" title="Clinical trial">clinical trials</a> of the experimental drug <b id="mwE7Q"><a href="./Erlizumab" id="mwE7U" rel="mw:WikiLink" title="Erlizumab">erlizumab</a></b> (rhuMAb), four patients suddenly started coughing up blood and later died?