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Rögnvaldsson S, Love TJ, Thorsteinsdottir S, Reed ER, Óskarsson JÞ, Pétursdóttir Í, Sigurðardóttir GÁ, Viðarsson B, Önundarson PT, Agnarsson BA, Sigurðardóttir M, Þorsteinsdóttir I, Ólafsson Í, Þórðardóttir ÁR, Eyþórsson E, Jónsson Á, Björnsson AS, Gunnarsson GÞ, Pálsson R, Indriðason ÓS, Gíslason GK, Ólafsson A, Hákonardóttir GK, Brinkhuis M, Halldórsdóttir SL, Ásgeirsdóttir TL, Steingrímsdóttir H, Danielsen R, Dröfn Wessman I, Kampanis P, Hultcrantz M, Durie BGM, Harding S, Landgren O, Kristinsson SY. Correction: Iceland screens, treats, or prevents multiple myeloma (iStopMM): a population-based screening study for monoclonal gammopathy of undetermined significance and randomized controlled trial of follow-up strategies. Blood Cancer J 2023; 13:39. [PMID: 36935437 PMCID: PMC10025257 DOI: 10.1038/s41408-023-00814-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2023] Open
Affiliation(s)
| | | | - Sigrun Thorsteinsdottir
- Faculty of Medicine, Univeristy of Iceland, Reykjavík, Iceland
- Dept of Hematology, Rigshospitalet, Copenhagen, Denmark
| | - Elín Ruth Reed
- Faculty of Medicine, Univeristy of Iceland, Reykjavík, Iceland
| | | | | | | | | | - Páll Torfi Önundarson
- Faculty of Medicine, Univeristy of Iceland, Reykjavík, Iceland
- Landspítali University Hospital, Reykjavík, Iceland
| | - Bjarni A Agnarsson
- Faculty of Medicine, Univeristy of Iceland, Reykjavík, Iceland
- Landspítali University Hospital, Reykjavík, Iceland
| | | | | | | | | | | | | | | | - Gunnar Þór Gunnarsson
- Faculty of Medicine, Univeristy of Iceland, Reykjavík, Iceland
- Akureyri Hospital, Akureyri, Iceland
| | - Runólfur Pálsson
- Faculty of Medicine, Univeristy of Iceland, Reykjavík, Iceland
- Landspítali University Hospital, Reykjavík, Iceland
| | - Ólafur Skúli Indriðason
- Faculty of Medicine, Univeristy of Iceland, Reykjavík, Iceland
- Landspítali University Hospital, Reykjavík, Iceland
| | | | - Andri Ólafsson
- Faculty of Medicine, Univeristy of Iceland, Reykjavík, Iceland
| | | | - Manje Brinkhuis
- Faculty of Medicine, Univeristy of Iceland, Reykjavík, Iceland
| | | | | | | | | | | | | | | | - Brian G M Durie
- Cedar-Sinai Samual Oschin Cancer Center, Los Angeles, CA, USA
| | | | - Ola Landgren
- Sylvester Comprehensive Cancer Center, University of Miami, Miami, FL, USA
| | - Sigurður Yngvi Kristinsson
- Faculty of Medicine, Univeristy of Iceland, Reykjavík, Iceland.
- Landspítali University Hospital, Reykjavík, Iceland.
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Rögnvaldsson S, Love TJ, Thorsteinsdottir S, Reed ER, Óskarsson JÞ, Pétursdóttir Í, Sigurðardóttir GÁ, Viðarsson B, Önundarson PT, Agnarsson BA, Sigurðardóttir M, Þorsteinsdóttir I, Ólafsson Í, Þórðardóttir ÁR, Eyþórsson E, Jónsson Á, Björnsson AS, Gunnarsson GÞ, Pálsson R, Indriðason ÓS, Gíslason GK, Ólafsson A, Hákonardóttir GK, Brinkhuis M, Halldórsdóttir SL, Ásgeirsdóttir TL, Steingrímsdóttir H, Danielsen R, Dröfn Wessman I, Kampanis P, Hultcrantz M, Durie BGM, Harding S, Landgren O, Kristinsson SY. Iceland screens, treats, or prevents multiple myeloma (iStopMM): a population-based screening study for monoclonal gammopathy of undetermined significance and randomized controlled trial of follow-up strategies. Blood Cancer J 2021; 11:94. [PMID: 34001889 PMCID: PMC8128921 DOI: 10.1038/s41408-021-00480-w] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 03/31/2021] [Accepted: 04/13/2021] [Indexed: 02/08/2023] Open
Abstract
Monoclonal gammopathy of undetermined significance (MGUS) precedes multiple myeloma (MM). Population-based screening for MGUS could identify candidates for early treatment in MM. Here we describe the Iceland Screens, Treats, or Prevents Multiple Myeloma study (iStopMM), the first population-based screening study for MGUS including a randomized trial of follow-up strategies. Icelandic residents born before 1976 were offered participation. Blood samples are collected alongside blood sampling in the Icelandic healthcare system. Participants with MGUS are randomized to three study arms. Arm 1 is not contacted, arm 2 follows current guidelines, and arm 3 follows a more intensive strategy. Participants who progress are offered early treatment. Samples are collected longitudinally from arms 2 and 3 for the study biobank. All participants repeatedly answer questionnaires on various exposures and outcomes including quality of life and psychiatric health. National registries on health are cross-linked to all participants. Of the 148,704 individuals in the target population, 80 759 (54.3%) provided informed consent for participation. With a very high participation rate, the data from the iStopMM study will answer important questions on MGUS, including potentials harms and benefits of screening. The study can lead to a paradigm shift in MM therapy towards screening and early therapy.
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Affiliation(s)
| | | | - Sigrun Thorsteinsdottir
- Faculty of Medicine, Univeristy of Iceland, Reykjavík, Iceland
- Dept of Hematology, Rigshospitalet, Copenhagen, Denmark
| | - Elín Ruth Reed
- Faculty of Medicine, Univeristy of Iceland, Reykjavík, Iceland
| | | | | | | | | | - Páll Torfi Önundarson
- Faculty of Medicine, Univeristy of Iceland, Reykjavík, Iceland
- Landspítali University Hospital, Reykjavík, Iceland
| | - Bjarni A Agnarsson
- Faculty of Medicine, Univeristy of Iceland, Reykjavík, Iceland
- Landspítali University Hospital, Reykjavík, Iceland
| | | | | | | | | | | | | | | | - Gunnar Þór Gunnarsson
- Faculty of Medicine, Univeristy of Iceland, Reykjavík, Iceland
- Akureyri Hospital, Akureyri, Iceland
| | - Runólfur Pálsson
- Faculty of Medicine, Univeristy of Iceland, Reykjavík, Iceland
- Landspítali University Hospital, Reykjavík, Iceland
| | - Ólafur Skúli Indriðason
- Faculty of Medicine, Univeristy of Iceland, Reykjavík, Iceland
- Landspítali University Hospital, Reykjavík, Iceland
| | | | - Andri Ólafsson
- Faculty of Medicine, Univeristy of Iceland, Reykjavík, Iceland
| | | | - Manje Brinkhuis
- Faculty of Medicine, Univeristy of Iceland, Reykjavík, Iceland
| | | | | | | | | | | | | | | | - Brian G M Durie
- Cedar-Sinai Samual Oschin Cancer Center, Los Angeles, CA, USA
| | | | - Ola Landgren
- Sylvester Comprehensive Cancer Center, University of Miami, Miami, FL, USA
| | - Sigurður Yngvi Kristinsson
- Faculty of Medicine, Univeristy of Iceland, Reykjavík, Iceland.
- Landspítali University Hospital, Reykjavík, Iceland.
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Fenton A, Chinnadurai R, Gullapudi L, Kampanis P, Dasgupta I, Ritchie J, Harding S, Ferro CJ, Kalra PA, Taal MW, Cockwell P. Association between non-malignant monoclonal gammopathy and adverse outcomes in chronic kidney disease: A cohort study. PLoS Med 2020; 17:e1003050. [PMID: 32109242 PMCID: PMC7048272 DOI: 10.1371/journal.pmed.1003050] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Accepted: 02/03/2020] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND In studies including the general population, the presence of non-malignant monoclonal gammopathy (MG) can be causally associated with kidney damage and shorter survival. We assessed whether the presence of an MG is associated with a higher risk of kidney failure or death in individuals with chronic kidney disease (CKD). METHODS AND FINDINGS Data were used from 3 prospective cohorts of individuals with CKD (not on dialysis or with a kidney transplant): (1) Renal Impairment in Secondary Care (RIISC, Queen Elizabeth Hospital and Heartlands Hospital, Birmingham, UK, N = 878), (2) Salford Kidney Study (SKS, Salford Royal Hospital, Salford, UK, N = 861), and (3) Renal Risk in Derby (RRID, Derby, UK, N = 1,739). Participants were excluded if they had multiple myeloma or any other B cell lymphoproliferative disorder with end-organ damage. Median age was 71.0 years, 50.6% were male, median estimated glomerular filtration rate was 42.3 ml/min/1.73 m2, and median urine albumin-to-creatinine ratio was 3.4 mg/mmol. All non-malignant MG was identified in the baseline serum of participants of RIISC. Further, light chain MG (LC-MG) was identified and studied in participants of RIISC, SKS, and RRID. Participants were followed up for kidney failure (defined as the initiation of dialysis or kidney transplantation) and death. Associations with the risk of kidney failure were estimated by competing-risks regression (handling death as a competing risk), and associations with death were estimated by Cox proportional hazards regression. In total, 102 (11.6%) of the 878 RIISC participants had an MG. During a median follow-up time of 74.0 months, there were 327 kidney failure events and 202 deaths. The presence of MG was not associated with risk of kidney failure (univariable subhazard ratio [SHR] 0.97 [95% CI 0.68 to 1.38], P = 0.85; multivariable SHR 1.16 [95% CI 0.80 to 1.69], P = 0.43), and although there was a higher risk of death in univariable analysis (hazard ratio [HR] 2.13 [95% CI 1.49 to 3.02], P < 0.001), this was not significant in multivariable analysis (HR 1.37 [95% CI 0.93 to 2.00], P = 0.11). Fifty-five (1.6%) of the 3,478 participants from all 3 studies had LC-MG. During a median follow-up time of 62.5 months, 564 of the 3,478 participants progressed to kidney failure, and 803 died. LC-MG was not associated with risk of kidney failure (univariable SHR 1.07 [95% CI 0.58 to 1.96], P = 0.82; multivariable SHR 1.42 [95% CI 0.78 to 2.57], P = 0.26). There was a higher risk of death in those with LC-MG in the univariable model (HR 2.51 [95% CI 1.59 to 3.96], P < 0.001), but not in the multivariable model (HR 1.49 [95% CI 0.93 to 2.39], P = 0.10). An important limitation of this work was that only LC-MG, rather than any MG, could be identified in participants from SKS and RRID. CONCLUSIONS The prevalence of MG was higher in this CKD cohort than that reported in the general population. However, the presence of an MG was not independently associated with a significantly higher risk of kidney failure or, unlike in the general population, risk of death.
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Affiliation(s)
- Anthony Fenton
- University Hospitals Birmingham NHS Foundation Trust, Birmingham, United Kingdom
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
- * E-mail:
| | | | - Latha Gullapudi
- Division of Medical Sciences and Graduate Entry Medicine, School of Medicine, University of Nottingham, Nottingham, United Kingdom
| | | | - Indranil Dasgupta
- University Hospitals Birmingham NHS Foundation Trust, Birmingham, United Kingdom
| | - James Ritchie
- Salford Royal NHS Foundation Trust, Salford, United Kingdom
| | | | - Charles J. Ferro
- University Hospitals Birmingham NHS Foundation Trust, Birmingham, United Kingdom
| | | | - Maarten W. Taal
- Division of Medical Sciences and Graduate Entry Medicine, School of Medicine, University of Nottingham, Nottingham, United Kingdom
| | - Paul Cockwell
- University Hospitals Birmingham NHS Foundation Trust, Birmingham, United Kingdom
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
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Ford L, Kampanis P, Berg J. Thiopurine S-methyltransferase genotype-phenotype concordance: used as a quality assurance tool to help control the phenotype assay. Ann Clin Biochem 2009; 46:152-4. [DOI: 10.1258/acb.2008.008167] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Background As part of the quality control system for our TPMT phenotyping service we monitor the genotype-phenotype concordance for patient samples with deficient and low TPMT activity. We have studied the genotype-phenotype concordance over the last year to demonstrate its effectiveness as a quality assurance tool. Methods From July 2007 to July 2008 TPMT genotyping was performed on all routine samples analysed using our phenotypic assay with an activity of ≤40 nmol 6-MTG/gHb/h. The monthly genotype-phenotype concordance was calculated between: all deficient TPMT activity results and a homozygous mutant or compound heterozygote genotype, low TPMT activity and a heterozygote genotype, normal TPMT activity and a wild-type genotype. Results A total of 14,832 samples were analysed by TPMT phenotyping and 1769 of these by genotyping. The monthly mean concordance between low TPMT activity and a mutant heterozygote genotype was 83%, ranging from 67–90%. The number of individuals with deficient TPMT activity identified by phenotyping was 44. For two of these individuals only one mutant allele was detected, and for one no common mutations were identified. Conclusions Monitoring the genotype-phenotype concordance is an effective quality assurance tool for the TPMT phenotyping assay. As demonstrated in this study current genotyping assays risk missing some deficient patients.
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Affiliation(s)
- Loretta Ford
- Department of Clinical Biochemistry, City Hospital, Dudley Road, Birmingham B18 7QH, UK
| | - Petros Kampanis
- Department of Clinical Biochemistry, City Hospital, Dudley Road, Birmingham B18 7QH, UK
| | - Jonathan Berg
- Department of Clinical Biochemistry, City Hospital, Dudley Road, Birmingham B18 7QH, UK
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Abstract
BACKGROUND Human faecal elastase-1 (FE-1) is an established biochemical test for the investigation of pancreatic exocrine insufficiency. Conventional extraction methods for FE-1 analysis can give false-positive results with watery stools. This is a major limitation as patients investigated for pancreatic disease commonly produce such stools. We have developed an improved FE-1 test that overcomes water interference by measuring the enzyme in dried faeces. METHODS A novel collection device for FE-1 analysis that involves drying and weighing the stool sample was developed in our laboratory and compared with a conventional wet method, E1 Quick-Prep (Schebo, Biotech AG, Germany). The concentration of faecal FE-1 was determined using a commercially available enzyme-linked immunosorbent assay method (Schebo). RESULTS FE-1 values obtained using the new dry extraction procedure (mean 1777 microg/g dry stool) were higher when compared with the conventional wet analysis (mean 402 microg/g stool). A 1:2 dilution in water, mimicking a loose stool, was found to affect FE-1 results obtained using the conventional wet extraction procedure. The new dry extraction method gave consistent results when water content was varied in the original stool sample. CONCLUSION We have demonstrated that our new device overcomes water interference, allowing results to be obtained from stool samples that would otherwise be unsuitable for FE-1 analysis.
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Affiliation(s)
- Petros Kampanis
- Department of Clinical Biochemistry, City Hospital, Dudley Road, Birmingham B18 7QH, UK.
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Milne D, Kampanis P, Nicol S, Dias S, Campbell DG, Fuller-Pace F, Meek D. A novel site of AKT-mediated phosphorylation in the human MDM2 onco-protein. FEBS Lett 2004; 577:270-6. [PMID: 15527798 DOI: 10.1016/j.febslet.2004.09.081] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2004] [Revised: 09/26/2004] [Accepted: 09/26/2004] [Indexed: 11/22/2022]
Abstract
MDM2 is an E3 ubiquitin ligase which mediates ubiquitylation and proteasome-dependent degradation of the p53 tumor suppressor protein. Phosphorylation of MDM2 by the protein kinase AKT is thought to regulate MDM2 function in response to survival signals, but there has been uncertainty concerning the identity of the sites phosphorylated by AKT. In the present study, we identify Ser-166, a site previously reported as an AKT target, and Ser-188, a novel site which is the major site of phosphorylation of MDM2 by AKT in vitro. Analysis of MDM2 in cultured cells confirms that Ser-166 and Ser-188 are phosphorylated by AKT in a physiological context.
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Affiliation(s)
- Diane Milne
- Molecular Signaling Group, Biomedical Research Centre, University of Dundee, Dundee DD1 9SY, UK
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