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A MyLeukemiaTeam Member asked a question 💭
Valley Springs, CA

I have a 9 minute video which explains BTK inhibitor and why it works. This easy to understand video can help people have a better life by understanding what CLL/SLL is and why the BTK inhibitors works. The three different BTK inhibitors are discussed and why the medication works. The goal of medication is to make a person's life better and understanding why the medication works which can help suppress the fear of unknown by understanding why medication is a good choice for a happier and… read more

BTK Inhibitors in CLL / SLL
BTK Inhibitors in CLL / SLL
April 28
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MyLeukemiaTeam

That sounds like a wonderful resource — understanding your treatment can make a real difference in feeling more confident and in control. Here's a plain-language breakdown of how BTK inhibitors work:

CLL/SLL develops when the body produces abnormal B cells (a type of white blood cell). Bruton's tyrosine kinase (BTK) is a Show Full Answer

That sounds like a wonderful resource — understanding your treatment can make a real difference in feeling more confident and in control. Here's a plain-language breakdown of how BTK inhibitors work:

CLL/SLL develops when the body produces abnormal B cells (a type of white blood cell). Bruton's tyrosine kinase (BTK) is a protein that acts like a "go signal," telling these cancerous B cells to keep growing and surviving.

BTK inhibitors work by blocking that signal, essentially cutting off the fuel the cancer cells need to grow. There are currently four FDA-approved BTK inhibitors for CLL/SLL:

- Ibrutinib (Imbruvica) — the first approved, permanently binds to BTK
- Acalabrutinib (Calquence) — a next-generation option with more targeted action
- Zanubrutinib (Brukinsa) — another next-generation option
- Pirtobrutinib (Jaypirca) — binds to BTK differently, may work even when mutations reduce other drugs' effectiveness

Each blocks BTK but in slightly different ways, which affects their side effect profiles and how well they hold up over time.

Always speak with your care team about which option may be best suited for your specific situation.

April 28
A MyLeukemiaTeam Member

Robert, I am glad you found what works for you. I have heard most doctors talk about how the treatments are not particularly good for our bodies, even though they help us control the cancer. It is always one of weighing the risk/benefit situation. So that is why "watch and wait" is a good protocol for many, until we start getting the side effects, pain, etc. They have found there is no good reason to treat CLL before the symptoms become a problem, for most people. Treating early does not provide a longer life, in fact it lowers quality of life to treat too early. But it sounds like you had a more agressive situation that needed treatment, so you got it. Does that make sense?

May 27
A MyLeukemiaTeam Member

So I notice this gentleman uses the phrase "well tolerated" without actually going into what the not so well tolerated side effects may be. Without doubt this class of medication seems to be a game changer and anyone who needs treatment, might want to consider it. I specifically have questions about reduction or inactivation of immunoglobulins. Already CLL/SLL patients are immunocompromised. I believe that infection is a major threat to patients. My question is, will this class of medication increase immunological risk. Zanubrutinib (Brukinsa) has significant immunological suppression and can lead to serious infections. This among other side effects such as bleeding issues concern me. For me, as I told my doctor, lumpy as I am, if constitutional symptoms are not present and lymph node size does not impinge upon any internal structure, if your doctor says you can still watch and wait, I will always choose NOT going on meds if possible but to be vigilant about yourself and your visits to doctors for surveillance.

April 29
A MyLeukemiaTeam Member

RobertG, enjoy your exciting cruise. 2 weeks ? Amazing! Have a safe trip and relaxing time.

May 27
A MyLeukemiaTeam Member

You are correct that my numbers increased a lot every month versus yearly. I also just learned my spleen was enlarged which is stage 3 CLL when I requested medication. I did not want excess damage from those "B" cells which could be anywhere those cells see something no working correct? Plus I realize the internal damage could not be seen at an office visit and I never had any lumps or bumps nor fatigue? I would rather stop the damage and risk possible ill affects (I did develop a strange cough which was an ill affect.) Then I discovered from a new doctor that my spleen was enlarged from an old MRI which none of my doctors discussed with me? I know if the bad cells mutate then they may not be controlled by the medication. Then it will be time for a new medication. I understand the BTK inhibitor can control good cells but I accept this issue. Now that I know my CLL is controlled with medication I am both mentally and physically healthy. I think watching and waiting is good for the really slow CLL which can last for years. I also think medical people should inform everyone about everything a person should know about CLL and medication so each person has enough information to make a healthy choice. I hope your summer will be as good as my summer which beginning next week will be a two week cruise first to Mexico then Alaska and Canada before returning to S.F. which is 120 miles west of where I live. Celebrating Long Life (CLL)

May 27

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