Conclusions
Our series of analyses indicate early-good and delayedpartial
trajectories of treatment response are seen in
clozapine studies. The main caveat is that the trajectory
analysis approach is exploratory rather than definitive,
and requires replication. The distribution of clozapine
responders and nonresponders among the trajectory groups
supports the proposal of subtyping schizophrenia according
to treatment response.
Acknowledgements
Novartis provided data for our analyses, but had no other
role. Dr Honer has received consulting fees or has sat on
paid advisory boards for MultiDimensional Healthcare
Consulting, In Silico, Eli Lilly, Lundbeck, and Roche.
Dr Barr has received grants from Bristol-Myers Squibb.
Dr Procyshyn has received consulting fees or has sat on paid
advisory boards for AstraZeneca, Bristol-Myers Squibb,
Janssen, Otsuka, Pfizer, and Sunovion. Andrea A Jones,
Dr Thornton, and Dr Vila-Rodriguez report no conflicts of
interest.