Like Janet, I had to give myself Neulasta injections (well my husband gave them to me, I'm a bit of a suck and couldn't do it) to boost my white blood cells after chemo. I had my first four rounds without it but ended up in hospital twice with infection. My temperature was through to roof. So my Onc told me to inject the Neulasta for the last four rounds. No infections! So hopefully you won't have to worry too much about getting infections. I don't think the booster will effect whether you have other side effects though but you may only have mild ones. Fingers crossed.
Good luck with the trial and your treatments.
Love Janey xxx