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Real members of MyMyelomaTeam have posted questions and answers that support our community guidelines, and should not be taken as medical advice. Looking for the latest medically reviewed content by doctors and experts? Visit our resource section.

What Does It Mean When Kappa Light Chain Numbers Go Up While MSpike Goes Down? Does MSpike Trends Typically Follow KAPPA?

A MyMyelomaTeam Member asked a question 💭
Valdez, AK

i’ve been in induction for & months with slow downward movement.

November 26, 2023
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IgG and IgA Antibodies: What Do They Mean? Read Article...
A MyMyelomaTeam Member

Alicia, so what type of myeloma do you have? Are you getting Darzalex? For those of us who produce an m spike, it's always good to have it at 0.0. Darzalex will show an m spike of about 0.2 on the kappa region on an electrophoresis. If your myeloma is IgG kappa it's hard to tell if it's your myeloma or the Darzalex unless your lab does a Daratumab specific immunofixation. That way they know it's Darzalex and not your myeloma. As long as you m spike is going down, I think you're okay. With kappa myeloma, the kappa Lambda ratio will go up when your myeloma is active. It might take several months of treatment for your light chains and ratio to stabilize 💕💖

November 26, 2023
A MyMyelomaTeam Member

thank you Donna. I am on DKRd which includes Darzelex. This is new information to me. i have so much to learn!

November 26, 2023

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