Hello Elizabeth,

It is a shame that, when faced with such important questions—the kind that naturally arise when you are in a situation like this—the first answer comes from an AI.

A low blood count can be a sign of possible bone marrow failure, though that isn't always the case. There are instances where counts are low, yet the marrow continues to function normally—meaning it is healthy, as appears to be the case for you.

I suffered from very severe bone marrow aplasia in 2004, and a very small PNH clone was also detected. Over the past twenty-two years, I’ve experienced several episodes where my blood counts pointed to possible marrow failure, but they never progressed into full-blown aplasia. Admittedly, none were as severe as the first one, but I certainly suffered from significant anemia, and the PNH clone was progressively increasing.

On the other hand, it is important to keep in mind the close link between PNH, bone marrow aplasia, and macrocytic anemia. It is possible—as your doctor suggests—that since your clone is very small, the symptoms you are noticing are more closely related to the low counts or the macrocytic anemia; however, the clone remains an important marker.

You will likely undergo diagnostic monitoring over the coming months—including blood tests—to track how this dysfunction evolves, and you may be prescribed medication or require transfusions.

The positive side of all this—if we look for a silver lining—is that you are under observation, you have a preliminary diagnosis, the PNH clone has been identified (and is small), and your bone marrow appears healthy. The uncertainty of not knowing what is going on has been eliminated. ;)

I imagine you are feeling quite fatigued right now and perhaps not in the best spirits. Take your time, prioritize self-care, and allow your loved ones to care for you as well. Don't hesitate to ask the doctors any questions you have, and here is a space for you to share your progress with others like you.

Best wishes!