Long-Term Follow-up of Monoclonal Gammopathy of Undetermined Significance

MGUS affects more than 5% of persons older than 70 years and shortens survival, as compared with age-matched controls. In a long-term study involving more than 1000 patients, those with IgM MGUS had a higher rate of progression to B-cell cancer than those with IgG MGUS.

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Bibliographic Details
Published inThe New England journal of medicine Vol. 378; no. 3; pp. 241 - 249
Main Authors Kyle, Robert A, Larson, Dirk R, Therneau, Terry M, Dispenzieri, Angela, Kumar, Shaji, Cerhan, James R, Rajkumar, S. Vincent
Format Journal Article
LanguageEnglish
Published United States Massachusetts Medical Society 18.01.2018
Subjects
Online AccessGet full text
ISSN0028-4793
1533-4406
1533-4406
DOI10.1056/NEJMoa1709974

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Abstract MGUS affects more than 5% of persons older than 70 years and shortens survival, as compared with age-matched controls. In a long-term study involving more than 1000 patients, those with IgM MGUS had a higher rate of progression to B-cell cancer than those with IgG MGUS.
AbstractList BackgroundMonoclonal gammopathy of undetermined significance (MGUS) occurs in approximately 3% of persons 50 years of age or older.MethodsWe studied 1384 patients who were residing in southeastern Minnesota and in whom MGUS was diagnosed at the Mayo Clinic in the period from 1960 through 1994; the median follow-up was 34.1 years (range, 0.0 to 43.6). The primary end point was progression to multiple myeloma or another plasma-cell or lymphoid disorder.ResultsDuring 14,130 person-years of follow-up, MGUS progressed in 147 patients (11%), a rate that was 6.5 times (95% confidence interval [CI], 5.5 to 7.7) as high as the rate in the control population. The risk of progression without accounting for death due to competing causes was 10% at 10 years, 18% at 20 years, 28% at 30 years, 36% at 35 years, and 36% at 40 years. Among patients with IgM MGUS, the presence of two adverse risk factors -- namely, an abnormal serum free light-chain ratio (ratio of kappa to lambda free light chains) and a high serum monoclonal protein (M protein) level (≥1.5 g per deciliter) -- was associated with a risk of progression at 20 years of 55%, as compared with 41% among patients who had one adverse risk factor and 19% among patients who had neither risk factor. Among patients with non-IgM MGUS, the risk of progression at 20 years was 30% among those who had the two risk factors, 20% among those who had one risk factor, and 7% among those who had neither risk factor. Patients with MGUS had shorter survival than was expected in the control population of Minnesota residents of matched age and sex (median, 8.1 vs. 12.4 years; P<0.001).ConclusionsSignificant differences were noted in the risk of progression between patients with IgM MGUS and those with non-IgM MGUS. Overall survival was shorter among patients with MGUS than was expected in a matched control population. (Funded by the National Cancer Institute.)
Monoclonal gammopathy of undetermined significance (MGUS) occurs in approximately 3% of persons 50 years of age or older. We studied 1384 patients who were residing in southeastern Minnesota and in whom MGUS was diagnosed at the Mayo Clinic in the period from 1960 through 1994; the median follow-up was 34.1 years (range, 0.0 to 43.6). The primary end point was progression to multiple myeloma or another plasma-cell or lymphoid disorder. During 14,130 person-years of follow-up, MGUS progressed in 147 patients (11%), a rate that was 6.5 times (95% confidence interval [CI], 5.5 to 7.7) as high as the rate in the control population. The risk of progression without accounting for death due to competing causes was 10% at 10 years, 18% at 20 years, 28% at 30 years, 36% at 35 years, and 36% at 40 years. Among patients with IgM MGUS, the presence of two adverse risk factors - namely, an abnormal serum free light-chain ratio (ratio of kappa to lambda free light chains) and a high serum monoclonal protein (M protein) level (≥1.5 g per deciliter) - was associated with a risk of progression at 20 years of 55%, as compared with 41% among patients who had one adverse risk factor and 19% among patients who had neither risk factor. Among patients with non-IgM MGUS, the risk of progression at 20 years was 30% among those who had the two risk factors, 20% among those who had one risk factor, and 7% among those who had neither risk factor. Patients with MGUS had shorter survival than was expected in the control population of Minnesota residents of matched age and sex (median, 8.1 vs. 12.4 years; P<0.001). Significant differences were noted in the risk of progression between patients with IgM MGUS and those with non-IgM MGUS. Overall survival was shorter among patients with MGUS than was expected in a matched control population. (Funded by the National Cancer Institute.).
MGUS affects more than 5% of persons older than 70 years and shortens survival, as compared with age-matched controls. In a long-term study involving more than 1000 patients, those with IgM MGUS had a higher rate of progression to B-cell cancer than those with IgG MGUS.
Monoclonal gammopathy of undetermined significance (MGUS) occurs in approximately 3% of persons 50 years of age or older.BACKGROUNDMonoclonal gammopathy of undetermined significance (MGUS) occurs in approximately 3% of persons 50 years of age or older.We studied 1384 patients who were residing in southeastern Minnesota and in whom MGUS was diagnosed at the Mayo Clinic in the period from 1960 through 1994; the median follow-up was 34.1 years (range, 0.0 to 43.6). The primary end point was progression to multiple myeloma or another plasma-cell or lymphoid disorder.METHODSWe studied 1384 patients who were residing in southeastern Minnesota and in whom MGUS was diagnosed at the Mayo Clinic in the period from 1960 through 1994; the median follow-up was 34.1 years (range, 0.0 to 43.6). The primary end point was progression to multiple myeloma or another plasma-cell or lymphoid disorder.During 14,130 person-years of follow-up, MGUS progressed in 147 patients (11%), a rate that was 6.5 times (95% confidence interval [CI], 5.5 to 7.7) as high as the rate in the control population. The risk of progression without accounting for death due to competing causes was 10% at 10 years, 18% at 20 years, 28% at 30 years, 36% at 35 years, and 36% at 40 years. Among patients with IgM MGUS, the presence of two adverse risk factors - namely, an abnormal serum free light-chain ratio (ratio of kappa to lambda free light chains) and a high serum monoclonal protein (M protein) level (≥1.5 g per deciliter) - was associated with a risk of progression at 20 years of 55%, as compared with 41% among patients who had one adverse risk factor and 19% among patients who had neither risk factor. Among patients with non-IgM MGUS, the risk of progression at 20 years was 30% among those who had the two risk factors, 20% among those who had one risk factor, and 7% among those who had neither risk factor. Patients with MGUS had shorter survival than was expected in the control population of Minnesota residents of matched age and sex (median, 8.1 vs. 12.4 years; P<0.001).RESULTSDuring 14,130 person-years of follow-up, MGUS progressed in 147 patients (11%), a rate that was 6.5 times (95% confidence interval [CI], 5.5 to 7.7) as high as the rate in the control population. The risk of progression without accounting for death due to competing causes was 10% at 10 years, 18% at 20 years, 28% at 30 years, 36% at 35 years, and 36% at 40 years. Among patients with IgM MGUS, the presence of two adverse risk factors - namely, an abnormal serum free light-chain ratio (ratio of kappa to lambda free light chains) and a high serum monoclonal protein (M protein) level (≥1.5 g per deciliter) - was associated with a risk of progression at 20 years of 55%, as compared with 41% among patients who had one adverse risk factor and 19% among patients who had neither risk factor. Among patients with non-IgM MGUS, the risk of progression at 20 years was 30% among those who had the two risk factors, 20% among those who had one risk factor, and 7% among those who had neither risk factor. Patients with MGUS had shorter survival than was expected in the control population of Minnesota residents of matched age and sex (median, 8.1 vs. 12.4 years; P<0.001).Significant differences were noted in the risk of progression between patients with IgM MGUS and those with non-IgM MGUS. Overall survival was shorter among patients with MGUS than was expected in a matched control population. (Funded by the National Cancer Institute.).CONCLUSIONSSignificant differences were noted in the risk of progression between patients with IgM MGUS and those with non-IgM MGUS. Overall survival was shorter among patients with MGUS than was expected in a matched control population. (Funded by the National Cancer Institute.).
Author Dispenzieri, Angela
Kumar, Shaji
Kyle, Robert A
Rajkumar, S. Vincent
Therneau, Terry M
Cerhan, James R
Larson, Dirk R
Author_xml – sequence: 1
  givenname: Robert A
  surname: Kyle
  fullname: Kyle, Robert A
  organization: From the Divisions of Hematology (R.A.K., A.D., S.K., S.V.R.), Biostatistics (D.R.L., T.M.T.), and Epidemiology (J.R.C.), Mayo Clinic, Rochester, MN
– sequence: 2
  givenname: Dirk R
  surname: Larson
  fullname: Larson, Dirk R
  organization: From the Divisions of Hematology (R.A.K., A.D., S.K., S.V.R.), Biostatistics (D.R.L., T.M.T.), and Epidemiology (J.R.C.), Mayo Clinic, Rochester, MN
– sequence: 3
  givenname: Terry M
  surname: Therneau
  fullname: Therneau, Terry M
  organization: From the Divisions of Hematology (R.A.K., A.D., S.K., S.V.R.), Biostatistics (D.R.L., T.M.T.), and Epidemiology (J.R.C.), Mayo Clinic, Rochester, MN
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  givenname: Angela
  surname: Dispenzieri
  fullname: Dispenzieri, Angela
  organization: From the Divisions of Hematology (R.A.K., A.D., S.K., S.V.R.), Biostatistics (D.R.L., T.M.T.), and Epidemiology (J.R.C.), Mayo Clinic, Rochester, MN
– sequence: 5
  givenname: Shaji
  surname: Kumar
  fullname: Kumar, Shaji
  organization: From the Divisions of Hematology (R.A.K., A.D., S.K., S.V.R.), Biostatistics (D.R.L., T.M.T.), and Epidemiology (J.R.C.), Mayo Clinic, Rochester, MN
– sequence: 6
  givenname: James R
  surname: Cerhan
  fullname: Cerhan, James R
  organization: From the Divisions of Hematology (R.A.K., A.D., S.K., S.V.R.), Biostatistics (D.R.L., T.M.T.), and Epidemiology (J.R.C.), Mayo Clinic, Rochester, MN
– sequence: 7
  givenname: S. Vincent
  surname: Rajkumar
  fullname: Rajkumar, S. Vincent
  organization: From the Divisions of Hematology (R.A.K., A.D., S.K., S.V.R.), Biostatistics (D.R.L., T.M.T.), and Epidemiology (J.R.C.), Mayo Clinic, Rochester, MN
BackLink https://www.ncbi.nlm.nih.gov/pubmed/29342381$$D View this record in MEDLINE/PubMed
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Snippet MGUS affects more than 5% of persons older than 70 years and shortens survival, as compared with age-matched controls. In a long-term study involving more than...
Monoclonal gammopathy of undetermined significance (MGUS) occurs in approximately 3% of persons 50 years of age or older. We studied 1384 patients who were...
BackgroundMonoclonal gammopathy of undetermined significance (MGUS) occurs in approximately 3% of persons 50 years of age or older.MethodsWe studied 1384...
Monoclonal gammopathy of undetermined significance (MGUS) occurs in approximately 3% of persons 50 years of age or older.BACKGROUNDMonoclonal gammopathy of...
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SourceType Open Access Repository
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Publisher
StartPage 241
SubjectTerms Adult
Aged
Benign monoclonal gammopathy
Bone Marrow Examination
Disease Progression
Female
Follow-Up Studies
Glycoproteins - blood
Humans
Immunoglobulin Light Chains - blood
Immunoglobulin M
Immunoglobulin M - blood
Immunoglobulins
Leukemia
Light chains
M protein
Male
Medical disorders
Medical prognosis
Middle Aged
Monoclonal Gammopathy of Undetermined Significance - complications
Monoclonal Gammopathy of Undetermined Significance - mortality
Monoclonal Gammopathy of Undetermined Significance - pathology
Multiple myeloma
Multiple Myeloma - etiology
Patients
Prognosis
Proportional Hazards Models
Risk Factors
Title Long-Term Follow-up of Monoclonal Gammopathy of Undetermined Significance
URI https://nejm.org/doi/full/10.1056/NEJMoa1709974
https://www.ncbi.nlm.nih.gov/pubmed/29342381
https://www.proquest.com/docview/1988592353
https://www.proquest.com/docview/1989592078
https://pubmed.ncbi.nlm.nih.gov/PMC5852672
Volume 378
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