Stopping Palbociclib

Former Member
Former Member
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I was diagnosed with Stage 4 breast cancer 7 years ago, it had spread to spine, ribs and pelvis, though not severely. Since then I’ve been taking Letrozole and Palboclib, the latter 75mg, and on a 5-week cycle rather than 4 because my neutrophils never managed to recover with one week off. I have a CT scan now every 6 months, and there’s been no further spread of disease, no sign at all really now apart from some scarring where the bone cells won’t repair. I don’t experience any side-effects apart from getting tired more quickly than I think someone of my age should (I am 73).

For some time I’ve been wondering whether I really need to continue to take Palbo, would Letrozole alone keep it at bay, but whenever I mentioned the idea to an oncologist I was told there had been no trials and I shouldn’t take the risk. However I had an appointment today after latest CT scan (which is all clear as usual) and the oncologist said if I wanted I could go on to Letrozole only with a scan every 3 months. This was a phone appointment, and the next appointment, in 10 weeks time, will be face-to-face so that I can more details before deciding.

I feel generally very favourable to the idea, but would like to hear from anyone who has already gone down this route, or knows about any trials.

  • Hi there, sounds like you have a tough decision to make, that sounds really difficult.  I noticed you've not had any replies yet but I wondered if you've considered speaking to one of the team at Macmillan.  They might be able to help you think through the pros and cons. You can call the on 0800 808 0000 from 8am to 8pm daily. Best wishes 

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  • Former Member
    Former Member in reply to Irishgirl16

    Thanks for the advice. I noticed that there's an "Ask an expert" option on the menu, I'll post a similar question there. 

  • Hi Barbara, just saw your post and wanted to know how you are and if you decided to have a break from the palbociclib....

    My mum was diagnosed with Stage 4 breast 5 years ago then secondary breast in lung. Same as you been on Letrozole and palbociclib and had scans every 4 months and always just get told results are stable. Mum is suffering with balance, mobility etc and is also 73. Seen neurology and got diagnosed with peripheral neuropathy and got put on gabapentine. But last nerve conduction test said she didn't have it. Suffering with headaches particularly in the mornings.

    I'm asking the same question, does the palbociclib make any difference to the letrozole alone. Trials I've read seem to suggest the addition of palbociclib doesn't hardly change life expectancy. Sounds like she is similar to you in that her secondary was caught early. Also she was on HRT for years on a repeat prescription and was told to stop taking - age 68. I believe this could have fed the cancer but i guess we'll never know.

    Sorry for the long essay, just trying to see if you or anyone else is going through similar. Be good to hear how you are doing x

  • Former Member
    Former Member in reply to Nou

    Hello Nou

    Thanks for getting in touch. I haven't had my oncology appointment yet, it's due in the middle of January, so haven't got any further information. I don't really have any side effects from palbo (as far as I know - I've been taking it for nearly eight years now so it's difficult to tell!) and my health is generally good, I just don't want to keep taking a drug if I don't need it, particularly since it's so expensive. 

    My main question is whether I'll be able to restart it if (when) the secondaries return, if I decide that's what to do. Hoping that the oncologist can answer that when we meet. I'll get in touch again when I have a reply

    I have taken a couple of breaks before, just for a couple of months, once when I had a bad attack of shingles, and then again last summer when I had a lot of personal things to deal with and was very low on energy. The oncologist suggested it that time, they seem quite relaxed about taking a break for a couple of cycles, perhaps that's something your mother could discuss with her oncologist if she thinks that might help.

    Barbara