Cited by 31Acute Myeloid Leukemia ResearchProtein Degradation and InhibitorsMultiple Myeloma Research and Treatments

High level of full‐length cereblon mRNA in lower risk myelodysplastic syndrome with isolated 5q deletion is implicated in the efficacy of lenalidomide

Jonasova, Anna, Bokorova, Radka, Polak, Jaroslav, Vostry, Martin, Kostecka, Arnost, Hajkova, Hana, Neuwirtova, Radana, Siskova, Magda +7 more·2015·European Journal of Haematology

Abstract

Downregulation of cereblon (CRBN) gene expression is associated with resistance to the immunomodulatory drug lenalidomide and poor survival outcomes in multiple myeloma (MM) patients. However, the importance of CRBN gene expression in patients with myelodysplastic syndrome (MDS) and its impact on lenalidomide therapy are not clear. In this study, we evaluate cereblon expression in mononuclear cells isolated from bone marrow [23 lower risk MDS patients with isolated 5q deletion (5q‐), 37 lower risk MDS patients with chromosome 5 without the deletion of long arms (non‐5q‐), and 24 healthy controls] and from peripheral blood (38 patients with 5q‐, 52 non‐5q‐ patients and 25 healthy controls) to gain insight into, firstly, the role of cereblon in lower risk MDS patients with or without 5q deletion and, secondly, into the mechanisms of lenalidomide action. Patients with 5q‐ lower risk MDS have the highest levels of CRBN mRNA in comparison with both lower risk MDS without the deletion of long arms of chromosome 5 and healthy controls. CRBN gene expression was measured using the quantitative TaqMan real‐time PCR. High levels of CRBN mRNA were detected in all lenalidomide responders during the course of therapy. A significant decrease of the CRBN mRNA level during lenalidomide treatment is associated with loss of response to treatment and disease progression. These results suggest that, similar to the treatment of MM, high levels of full‐length CRBN mRNA in lower risk 5q‐ patients are necessary for the efficacy of lenalidomide.

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Crossref · 10.1111/ejh.12457

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  • CRBN expression levels in patient samples have been positively associated with sensitivity to thalidomide analogues in some studies but not in others.

    “CRBN expression levels in patient samples has been positively associated with sensitivity to thalidomide analogues in some studies149–154, but not in others155,156.”

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Authors
Jonasova, A., Bokorova, R., Polak, J., Vostry, M., Kostecka, A., Hajkova, H., Neuwirtova, R., Siskova, M., Sponerova, D., Cermak, J., Mikulenkova, D., Cervinek, L., Brezinova, J., Michalova, K., & Fuchs, O.
Affiliations
  • General University Hospital in Prague (CZ)
  • Institute of Hematology and Blood Transfusion Prague Czech Republic
  • Institute of Haematology and Blood Transfusion (CZ)
  • 1st Medical Clinic General University Hospital Prague Prague Czech Republic
  • Leukemic Group Faculty Hospital Brno Czech Republic
Corresponding author
Fuchs, Ota
Venue
European Journal of Haematology
Publisher
Wiley
Published
2014-10-31
Volume
95
Issue
1
Pages
27-34
ISSN
  • 0902-4441 (ISSN-L)
  • 1600-0609
OpenAlex
W1989595541
Cited by
31
References
43
Citations by year
2023: 1 · 2022: 1 · 2021: 4 · 2020: 2 · 2019: 4 · 2018: 5 · 2017: 5 · 2016: 3 · 2015: 6
FWCI
3.31
Type
journal article
Language
en
Open access
closed
Locations
  • European Journal Of Haematology (publishedVersion)
  • PubMed (publishedVersion)
Funders
the Internal Grant Agency of the Ministry of Health of the Czech Republic (NT/13836-4/2012)
Topics
  • Health Sciences › Medicine › Hematology › Acute Myeloid Leukemia Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Degradation and Inhibitors
  • Health Sciences › Medicine › Hematology › Multiple Myeloma Research and Treatments
Keywords
cereblon, myelodysplastic syndrome, 5q deletion, lenalidomide, immunomodulators, treatment resistance, disease progression, bone marrow mononuclear cells, peripheral blood
MeSH terms
Lenalidomide, Anemia, Macrocytic, Chromosome Deletion, Chromosomes, Human, Pair 5, Humans, Immunologic Factors, Leukocytes, Mononuclear, Myelodysplastic Syndromes, Peptide Hydrolases, RNA Splicing, RNA, Messenger, Thalidomide, Signal Transduction, Gene Expression Regulation, Neoplastic, Case-Control Studies, Treatment Outcome, Polymorphism, Single Nucleotide, Ubiquitin-Protein Ligases, Adaptor Proteins, Signal Transducing

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