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Questions and discussion about monoclonal gammopathy of undetermined significance (i.e., diagnosis, risk of progression, living with the disease, etc.)

Monoclonal protein gone on follow-up test

by GreenForest on Fri Jun 17, 2016 9:47 am

Dear all,

As this forum has been a valuable source of information and clarification in the last months, I wanted to contribute and share a story as well to give others some insights on our experiences.

How the story began:

My wife is in the mid 30s and has been to a regular checkup at the end of last summer. During checkup it was found that she has Hashimoto - an autoimmune disorder with hypothyroidism. She has been "unusually" sick during the time of that checkup (some fever on/off over some weeks, once a skin rash she had never before - both of them disappeared a short time later on their own) and the doctor "just" ordered some more blood tests during the checkup to rule out anything serious.

1st blood test, by GP:

When receiving the results of that additional blood tests, the GP immediately called my wife in and organized an appointment with a specialist on short notice. The GP was pretty serious and concerned about the result (told us not to open the envelope before meeting the specialist), as we then learned from the specialist (for blood/cancer related disorders) that the blood results indicated multiple myeloma or MGUS IgM kappa - which should then be analyzed in detail with a 2nd blood test from that specialist.

Not to mention that the time between having this 2nd test done and getting the detailed results have been horrible, we were using the time in between to get as much input as possible and to learn about the topic (even so Googling conditions is a topic for itself with lots of pros and lots of cons). It has been a very tough time for us.

2nd blood test, by specialist:

When finally receiving the results, we were told that the condition of "MGUS IgM kappa" was confirmed. The overall level of IgM was about 300 xy - they are using different units in Germany, but it converts to 0.3 g/dL (1.5 g/dL being the line of classifying as a risk factor).

So for what we could have possibly expected, MGUS with a spike of 0.3 g/dL was nearly the "best" option. Also, the light chain ratio was balanced, leaving us with one out of three risk factors for progression (the one being the fact that it is IgM instead of IgG).

The specialist told us that we should not worry at all - the level of M-protein is pretty low, normal ratio of light chains and the rate of progression is 20% in 20 years (which is correct according to all available studies and input in this forum). We should re-test in 6 months.

3rd blood test, by GP:

Some weeks/almost months ago, we went to get the retest done (not with the specialist this time, but with the GP as proposed by the specialist). Hoping again for the best (meaning: no elevation of the M-protein, still stable light chains), we were incredibly surprised to get the feedback on the result sheets stating that "No evidence of monoclonal gammopathy" was found! Also, all other related measures are within regular range.

This is amazing news of course and was a great relief! Only in this forum I have read about MGUS disappearing in rare scenarios before.

As of now, I still have a couple of thoughts or open questions that have been on my mind:

  • I´m still struggling with the 2nd test (the first one done by the specialist) at all: Measuring the (total) IgM does in no way give any information about the level of M-protein in there. So at the point in time of this 2nd test, the M-protein in retrospect could have been anything between 0 and 0,3 g/dL - would that be correct? (As M-protein is a part of the total protein, the "normal" protein being the 2nd part).
  • When being explicitly asked after this 2nd test, the specialist denied that having the tests done shortly after an infection could cause any high level IgMs. He told us that "having [Total] IgM above the norm" is a proof for the MGUS diagnosis. I strongly disagree with that. IgM levels rise and fall as our body start to fight infections - that's what I have learned from various sources. So every person having an infection will have elevated IgM for a short period of time - being no evidence of an MGUS condition.
The two question do leave me with the thought on why, based on all results, the specialist confirmed the diagnosis of MGUS - not having measured the actual level of the M-protein at all, just based on a slightly elevated Total IgM (while also ignoring the fact that my wife was ill around that time). Didn't he just wanted to create "hope" as a vanishing MGUS is that rare and chances were extremely high that an elevated Total IgM is proof enough? Plus the overall still "low" level of IgM being no reason for panic?

Also, of course this still does not explain why the M-protein seems to have disappeared at all (we´re asked to retest again in some months).

Also worth noticing (as I believe in a strong connection of all this events): Due to the Hashimoto diagnosis and low vitamin D levels (playing an important role in immune defense), my wife went to see a homeopath in the meanwhile (between the 2nd and 3rd test). She treated her with vitamin D supplements and an additional homeopathic medicine - resulting in my wife being able to stop taking medicine for her thyroid right now as measured levels are all in range!

The whole topic of MGUS has been tough for us and we did get the feeling that our intensive "research" helped us to understand more than the specialist actually told us.

All the best for everyone having to be a "member" of this club.

GreenForest
Name: GreenForest
Who do you know with myeloma?: -
When were you/they diagnosed?: -
Age at diagnosis: 34

Re: Monoclonal protein gone on follow-up test

by Multibilly on Fri Jun 17, 2016 1:44 pm

I will simply comment on the fact that several things other than MGUS or a related monoclonal disorder can cause an elevated total IgM level.

http://www.mayomedicallaboratories.com/test-catalog/Clinical+and+Interpretive/8158

I recall hearing of situations where a very low initial M-spike disappeared on a subsequent follow up test. I hope your next round immunofixation and electrophoresis tests still shows that no monoclonal protein is present. That would indeed be a welcome relief

Multibilly
Name: Multibilly
Who do you know with myeloma?: Me
When were you/they diagnosed?: Smoldering, Nov, 2012

Re: Monoclonal protein gone on follow-up test

by Jonah on Fri Jun 17, 2016 2:17 pm

I second Multibilly's suggestion. I also think that, to better understand what has been happening in your wife's case, it would make sense to make a list of these results for each of the three tests:

  1. Total IgG, IgA, and IgM levels
  2. Serum immunofixation (IFE) (tests to determine IF a monoclonal protein is present)
  3. Serum protein electrophoresis (SPEP) (estimates HOW MUCH monoclonal protein is present)
  4. Serum free light chain levels & ratio
I suspect only the total IgG, IgA, and IgM levels were measured in the first round of testing. Then, the doctors ran an SPEP, but maybe no IFE, during the second set of tests, and apparently the serum free light chain tests.

What would be particularly important is to see what tests were run as part of the third round of testing. Just the SPEP? IFE also? What else?

I don't think it is a good idea to talk about these things qualitatively. I would identify exactly which tests have been run and list out the results. That will give you a better idea of what is known and unknown, and what is actually going on.

Jonah

Re: Monoclonal protein gone on follow-up test

by GreenForest on Fri Jul 08, 2016 7:42 am

Dear all,

First of all - thank you very much for your feedback and input! I appreciate it very much.

This answers/confirms my first question - high total IgM count itself is not necessarily a proof for a MGUS condition.

I have checked on the lab results again to sum up the requested details (all that we got):

1st test (GP; August 2015)

- Immunofixation
- Indication of MGUS IgM, kappa
- Unfortunately, I don't have details on IgX levels available

2nd test (specialist for blood & cancer related conditions; September 2015)

- Unclear what kind of tests were done - documents and bill don't mention immunofixation or protein electrophoresis, just general blood count.
- IgG 1353 mg/dl
- IgA 336 mg/dl
- IgM 260 mg/dl (marked as "out of range", range being 40-230)
- Kappa / lambda ratio 1.09 (in range of 0.26-1.65)
- Kappa free light chains 16.40 mg/l
- Lambda free light chains 15.05 mg/l
- No explicit mention of "M-protein / paraprotein / M-spike ..." on all the documents

3rd test (GP; March 2016)

- Immunofixation
- IgG 14.4 g/l (converting to above units > 1440)
- IgA 3.18 g/l (converting to above units > 318)
- IgM 1.66 g/l (converting to above units > 166; "in range" now)
- Explicit remark: "No indication for a monoclonal gammopathy".

I hope this can give some more background even so we miss some of the details from the first test (it took us a while to get "up to speed" on what's important to get and ask for).

Best wishes,
GreenForest

GreenForest
Name: GreenForest
Who do you know with myeloma?: -
When were you/they diagnosed?: -
Age at diagnosis: 34


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