We don't know if or why the date was changed, but

We don't know if or why the date was changed, but I can think of 2 positives from delaying it slightly. Two 21-day rounds of cancer data will be known and have time to prepare and present the data as you mentioned. The other and more important IMO is that combo BLA will hopefully be submitted and avoid the FDA adding/changing a requirement based on mono pivotal trial data and throwing another wrench in getting combo approved.

Either way, a couple weeks later beginning mono pivotal trial isn't significant to me as long as combo gets approved early 2020 and cancer results are positive.

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