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Questions and discussion about smoldering myeloma (i.e., diagnosis, risk of progression, potential treatment, etc.)

What exactly does "high-risk" smoldering myeloma mean?

by mdszj on Sat Apr 14, 2018 9:39 am

Hi all.

I am trying to figure out exactly what the term high-risk smoldering multiple myeloma means.

Does it mean that you have a high risk of progressing from smoldering to active (symptomatic) multiple myeloma, or does it mean that when you do progress, it will turn into high-risk (active) multiple myeloma?

Thanks.

mdszj

Re: What exactly does "high-risk" smoldering myeloma mean?

by Dimamar on Sat Apr 14, 2018 1:44 pm

Hi,

I believe that high-risk smoldering myeloma means high risk of progression to symptomatic multiple myeloma.

There are several criteria for high risk. I have 2 of them

  • Relatively high free light chain kappa/lambda ratio ( >8 is considered high risk and mine is around 25-35)
  • Immunoparesis (i.e., low uninvolved immunoglobulins; my multiple myeloma is IgG, and my IgA and IgM are both way lower than minimal range and trending down).
If I remember correctly, if you have 2 of these criteria met, your chance to advance to multiple myeloma from smoldering myeloma is something like 50-80% in 2 years.

However, it is all individual, and it is very important to see the trends, especially M-protein and kappa-lambda ratio.

Good luck!

Dimamar
When were you/they diagnosed?: June, 2016
Age at diagnosis: 54

Re: What exactly does "high-risk" smoldering myeloma mean?

by mdszj on Sat Apr 14, 2018 6:09 pm

Hi,

My ratio is 68 as of my latest blood draw in January 2018. My smoldering multiple myeloma is IgA at 1492 (normal is 81-463 mg/dL). My IgM is slightly low at 32 mg/dL (normal is 48-271 mg/dL) and IgG is normal. Somewhere I thought I read that having a splenectomy often results in a depressed IgM level (I had a splenectomy several years ago). I do not have any out of range calcium, anemia, or renal issues, based on the labs. I was diagnosed with smoldering myeloma in December 2014, so it's a little over 3 years for me.

Good luck to you as well!

mdszj

Re: What exactly does "high-risk" smoldering myeloma mean?

by Dimamar on Sun Apr 15, 2018 12:39 pm

Hi mdsz,

Do they track your M-protein (M-spike)?

So you appear to have IgA smoldering multiple myeloma, and given that your IgA is 1492 mg/dl, we can guess that your M-protein is about 1 g/dl, or a bit higher, but it's better if M-protein is tracked separately, along with IgA values.

IgA multiple myeloma is considered a higher risk, on average, than the IgG type, if I am not mis­taken, but again, every case is individual.

Over the 3 years, how did your free light chain ratio and M-protein change?

Dimamar
When were you/they diagnosed?: June, 2016
Age at diagnosis: 54

Re: What exactly does "high-risk" smoldering myeloma mean?

by mdszj on Sun Apr 29, 2018 8:16 pm

Dimamar,

Sorry I took so long to answer. As of January 8, 2018, I had IgA of 1492 mg/dL, compared with 1597 mg/dL on December 12, 2014, when I was first diagnosed with smoldering myeloma. My serum kappa free light chain is 538 mg/L as of January 8, 2018. Protein electrophoresis results from January 8, 2018 also show beta-2 globulin of 1.4 g.dL (M-spike?).

In December 2014 my kappa-lambda ratio was 49 and has slowly risen to its current level of 68. I cant find any M-spike results.

They did a bone marrow biopsy at the time and the results showed ~10% plasma cells, also that there were no genetic abnormalities seen. Hopefully things have not changed!

mdszj


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