Smoldering Multiple Myeloma (SMM). Questions and Answers

Posted by DMD81 @dmdinapoli81, Dec 6, 2025

I wanted to start a discussion specifically on SMM. Asking specific questions about time of diagnosis, like age, m-spike level, protein in urine level and % of bone marrow involvement. If you had MGUS prior to diagnosis? Any bone or joint paint? What your Hem-onc has as your monitoring schedule? Etc.

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Profile picture for donna195 @donna195

@salma5k i am lambda high
Total serum:
Lambda 631 mg/dl
Kappa < 35 mg/dl
Flc from bmb less than 0.1

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@donna195 Sounds like you are low risk according to the IMWG 2/20/20 risk stratification model. All the best to you that you stay in the smoldering phase long-term.

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I was officially diagnosed with SMM in December of 2010 by Dr. Joseph Mikhael at Mayo in Scottsdale, AZ. M-spike was 0.7 with 15% abnormal plasma cells in BMB. No bone involvement or joint pain. Currently being monitored every 6 weeks by local oncologist.

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Profile picture for salma5k @salma5k

I was officially diagnosed with SMM in December of 2010 by Dr. Joseph Mikhael at Mayo in Scottsdale, AZ. M-spike was 0.7 with 15% abnormal plasma cells in BMB. No bone involvement or joint pain. Currently being monitored every 6 weeks by local oncologist.

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@salma5k
Thank you for the info, was your M-Spike always that low? What sparked the BMB?

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Very welcome. My M-spike hovers between 0.7 and 0.9. I am not a healthcare professional, but my job required me to establish affiliation agreements with healthcare facilities so I was constantly in and out of doctor's offices and hospitals. I began to feel a general feeling of malaise over the course of about three months which was unusual as I had been working in this capacity for almost a decade and I had never felt that unwell before. I just dismissed my symptoms and figured it would pass. It wasn't until I was stricken with bilateral pneumonia and my blood counts were low that I knew something was wrong. Physicians also felt something had gone awry as I was only 35 years old. I was referred to a rheumatologist who ran a battery of tests. Dr. Smith found the elevated IgA levels. She then provided a referral to an oncologist/hematologist who ordered more blood tests. The abnormal Kappa Free Light Chain test prompted the BMB.

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Profile picture for DMD81 @dmdinapoli81

To everyone coming into this chat. It is specifically about Smoldering Multiple Myeloma (SMM). If you were looking for answers on other diagnosis, there are form chats specific to those. Please keep crosstalk to a minimum.
Thank you.

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@dmdinapoli81 As the administrator of a board myself, I am well aware of how threads tend to drift. That seems a little harsh, however. While there are of course diagnostic criteria, the MGUS/SMM/MM spectrum is a continuum, and lines can get a little blurry on the borders.

I'm an example. Technically I've been high-risk MGUS for nearly two years. I've had three marrow biopsies during that time, because my doctor (a hem/onc whom I like a lot) keeps expecting to find >10% plasma cell involvement. Hasn't happened yet. However, a recent 24-hour urine showed significantly-increased albuminuria and bence jones proteinuria, and prompted a kidney biopsy (next week); the results may mean that I start treatment. The chart now notes SMM despite BMB results; MGRS is also in the mix.

It's a complex disease.

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Profile picture for salma5k @salma5k

Very welcome. My M-spike hovers between 0.7 and 0.9. I am not a healthcare professional, but my job required me to establish affiliation agreements with healthcare facilities so I was constantly in and out of doctor's offices and hospitals. I began to feel a general feeling of malaise over the course of about three months which was unusual as I had been working in this capacity for almost a decade and I had never felt that unwell before. I just dismissed my symptoms and figured it would pass. It wasn't until I was stricken with bilateral pneumonia and my blood counts were low that I knew something was wrong. Physicians also felt something had gone awry as I was only 35 years old. I was referred to a rheumatologist who ran a battery of tests. Dr. Smith found the elevated IgA levels. She then provided a referral to an oncologist/hematologist who ordered more blood tests. The abnormal Kappa Free Light Chain test prompted the BMB.

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@salma5k
Thank you so much for sharing your experience.

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Profile picture for wesleym @wesleym

@dmdinapoli81 As the administrator of a board myself, I am well aware of how threads tend to drift. That seems a little harsh, however. While there are of course diagnostic criteria, the MGUS/SMM/MM spectrum is a continuum, and lines can get a little blurry on the borders.

I'm an example. Technically I've been high-risk MGUS for nearly two years. I've had three marrow biopsies during that time, because my doctor (a hem/onc whom I like a lot) keeps expecting to find >10% plasma cell involvement. Hasn't happened yet. However, a recent 24-hour urine showed significantly-increased albuminuria and bence jones proteinuria, and prompted a kidney biopsy (next week); the results may mean that I start treatment. The chart now notes SMM despite BMB results; MGRS is also in the mix.

It's a complex disease.

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@wesleym
Have you ever gone to the istopMM studies website where they have the risk assessment? It gauges the likelihood of having a BMB over 10%.

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Profile picture for salma5k @salma5k

Very welcome. My M-spike hovers between 0.7 and 0.9. I am not a healthcare professional, but my job required me to establish affiliation agreements with healthcare facilities so I was constantly in and out of doctor's offices and hospitals. I began to feel a general feeling of malaise over the course of about three months which was unusual as I had been working in this capacity for almost a decade and I had never felt that unwell before. I just dismissed my symptoms and figured it would pass. It wasn't until I was stricken with bilateral pneumonia and my blood counts were low that I knew something was wrong. Physicians also felt something had gone awry as I was only 35 years old. I was referred to a rheumatologist who ran a battery of tests. Dr. Smith found the elevated IgA levels. She then provided a referral to an oncologist/hematologist who ordered more blood tests. The abnormal Kappa Free Light Chain test prompted the BMB.

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@salma5k
While I don’t want to say it’s nice to hear from someone under 45 but it is good to hear as I was first diagnosed with IgG kappa MGUS at 38. I was tested for rheumatoid arthritis just to rule that out, but 2019 my key numbers have only gone up, which prompted my first bone marrow biopsy last year. Now I am on a 4 month monitoring schedule. With 24hr urine every year.
With your BMB did you have any mutations of the chromosomes?
I have found a lot of new research, including one from the Mayo Clinic had of now included chromosome 13

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Profile picture for DMD81 @dmdinapoli81

@amberl99
If we stay on topic of SMM

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@dmdinapoli81
Now I understand. Cross talk means something different to me. Agree to stay on topic!

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