NCT03327597

Brief Summary

This study will assess the benefits and harms of screening for monoclonal gammopathy of undetermined significance (MGUS). The overall and disease-specific mortality will be compared between screened and not screened participants. All individuals registered as inhabitants in Iceland and born in 1975 or earlier have been invited to participate. The hypothesis is that an early detection of multiple myeloma (MM), through follow-up of MGUS, will improve overall survival and decrease complications associated with diagnosis and treatment of MM.

Trial Health

75
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
80,761

participants targeted

Target at P75+ for not_applicable

Timeline
4mo left

Started Sep 2016

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
active not recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress97%
Sep 2016Sep 2026

Study Start

First participant enrolled

September 1, 2016

Completed
1.1 years until next milestone

First Submitted

Initial submission to the registry

October 19, 2017

Completed
12 days until next milestone

First Posted

Study publicly available on registry

October 31, 2017

Completed
8.8 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

September 1, 2026

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

September 1, 2026

Last Updated

September 30, 2025

Status Verified

September 1, 2025

Enrollment Period

10 years

First QC Date

October 19, 2017

Last Update Submit

September 24, 2025

Conditions

Keywords

MGUSScreeningPopulation-based

Outcome Measures

Primary Outcomes (1)

  • Overall survival

    Number of participants alive in each study arm

    5 years from study start.

Secondary Outcomes (13)

  • Cause specific survival

    5 years from study start

  • Cost-effectiveness of screening for MGUS

    5 years from study start

  • Global satisfaction with one´s life as assessed by the Satisfaction with life (SWLS)

    5 years from study start.

  • Happiness as assessed by the Single item measure for happiness

    5 years from study start

  • Resilience as assessed by The Connor-Davidson resilience scale (CD-RISC)

    5 years from study start

  • +8 more secondary outcomes

Study Arms (6)

Abnormal Non-MGUS

ACTIVE COMPARATOR

Participants previously diagnosed with MGUS, multiple myeloma or other lymphoproliferative disease.

Other: Mental Health and Quality of Life questionnaireOther: Standard follow-up or treatment.

MGUS group arm 1

EXPERIMENTAL

Participants diagnosed with MGUS, randomized to group 1.

Other: Clinical follow-up 1Other: Mental Health and Quality of Life questionnaire

MGUS group arm 2

EXPERIMENTAL

Participants diagnosed with MGUS, randomized to group 2.

Other: Mental Health and Quality of Life questionnaireOther: Clinical follow-up 2

MGUS group arm 3

EXPERIMENTAL

Participants diagnosed with MGUS, randomized to group 3.

Other: Mental Health and Quality of Life questionnaireOther: Clinical follow-up 3

Normal group

ACTIVE COMPARATOR

Participants without MGUS.

Other: Mental Health and Quality of Life questionnaire

Controls

ACTIVE COMPARATOR

Participants without MGUS, matched to MGUS participants by age and gender.

Other: Mental Health and Quality of Life questionnaireOther: Clinical follow-up control

Interventions

Participants receive routine care outside the bounds of the trial. No further work-up.

MGUS group arm 1

Participants receive a Mental Health and Quality of Life questionnaire that will be answered electronically on the study website (www.blodskimun.is)

Abnormal Non-MGUSControlsMGUS group arm 1MGUS group arm 2MGUS group arm 3Normal group

Participants previously diagnosed as having MGUS or participants that have multiple myeloma or other lymphoproliferative diseases will receive standard clinical follow-up and treatment.

Abnormal Non-MGUS

Standard clinical follow-up according to International Myeloma Working Group (IMWG) guidelines.

MGUS group arm 2

Intensive clinical follow-up with regular clinical assessment, laboratory testing and radiology imaging.

MGUS group arm 3

Control clinical visit

Controls

Eligibility Criteria

Age40 Years+
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Born 1975 or earlier
  • With registered address in Iceland on November 1st 2016

You may not qualify if:

  • Prior multiple myeloma
  • Lymphoproliferative disease
  • Amyloidosis
  • M-protein \>30 g/L or involved:uninvolved serum FLC ratio \>100
  • Individuals with prior history of MGUS will be offered to be randomized into either moderate or intensive clinical follow-up (arms 2 or 3).

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University of Iceland

Reykjavik, Iceland

Location

Related Publications (3)

  • Eythorsson E, Rognvaldsson S, Thorsteinsdottir S, Einarsson Long T, Reed ER, Sigurdardottir GA, Vidarsson B, Onundarson PT, Agnarsson BA, Sigurdardottir M, Olafsson I, Thorsteinsdottir I, Sveinsdottir SV, Sigurdsson F, Thordardottir AR, Palsson R, Indridason OS, Jonsson A, Gislason GK, Olafsson A, Sigurdsson J, Steingrimsdottir H, Hultcrantz M, Durie BGM, Harding S, Landgren O, Aspelund T, Love TJ, Kristinsson SY. Development of a Multivariable Model to Predict the Need for Bone Marrow Sampling in Persons With Monoclonal Gammopathy of Undetermined Significance : A Cohort Study Nested in a Clinical Trial. Ann Intern Med. 2024 Apr;177(4):449-457. doi: 10.7326/M23-2540. Epub 2024 Apr 2.

  • Sigurbergsdottir AY, Rognvaldsson S, Thorsteinsdottir S, Sverrisdottir I, Sigurethardottir GA, Vietharsson B, Onundarson PT, Agnarsson BA, Sigurethardottir M, Thornorsteinsdottir I, Olafsson I, Thornorethardottir AR, Gislason GK, Olafsson A, Hultcrantz M, Durie BGM, Harding S, Landgren O, Love TJ, Kristinsson SY. Disease associations with monoclonal gammopathy of undetermined significance can only be evaluated using screened cohorts: results from the population-based iStopMM study. Haematologica. 2023 Dec 1;108(12):3392-3398. doi: 10.3324/haematol.2023.283191.

  • Thorsteinsdottir S, Gislason GK, Aspelund T, Rognvaldsson S, Oskarsson JThorn, Sigurethardottir GA, Thornorethardottir AR, Vietharsson B, Onundarson PT, Agnarsson BA, Sigurethardottir M, Thornorsteinsdottir I, Olafsson I, Eythornorsson E, Jonsson A, Berlanga O, Hultcrantz M, Durie BGM, Love TJ, Harding S, Landgren O, Kristinsson SY. Prevalence of smoldering multiple myeloma based on nationwide screening. Nat Med. 2023 Feb;29(2):467-472. doi: 10.1038/s41591-022-02183-6. Epub 2023 Feb 6.

MeSH Terms

Conditions

Monoclonal Gammopathy of Undetermined Significance

Interventions

Mental HealthTherapeutics

Condition Hierarchy (Ancestors)

HypergammaglobulinemiaBlood Protein DisordersHematologic DiseasesHemic and Lymphatic DiseasesParaproteinemiasImmunoproliferative DisordersImmune System Diseases

Intervention Hierarchy (Ancestors)

HealthPopulation Characteristics

Study Officials

  • Sigurdur Y Kristinsson, Professor

    University of Iceland

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Masking Details
Investigators and participants will be blinded to what participants are in the normal group and which participants are in arm 1 in the MGUS-group.
Purpose
SCREENING
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

October 19, 2017

First Posted

October 31, 2017

Study Start

September 1, 2016

Primary Completion (Estimated)

September 1, 2026

Study Completion (Estimated)

September 1, 2026

Last Updated

September 30, 2025

Record last verified: 2025-09

Data Sharing

IPD Sharing
Will not share

Locations