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Kater AP, Arslan Ö, Demirkan F, Herishanu Y, Ferhanoglu B, Diaz MG, Leber B, Montillo M, Panayiotidis P, Rossi D, Skarbnik A, Tempescul A, Turgut M, Mellink CH, van der Kevie-Kersemaekers AMF, Lanham S, Sale B, Del Rio L, Popovic R, Chyla BJ, Busman T, Komlosi V, Wang X, Sail K, Pena GE, Vizkelety T, Forconi F. Activity of venetoclax in patients with relapsed or refractory chronic lymphocytic leukaemia: analysis of the VENICE-1 multicentre, open-label, single-arm, phase 3b trial. Lancet Oncol 2024; 25:463-473. [PMID: 38467131 DOI: 10.1016/s1470-2045(24)00070-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 09/13/2023] [Revised: 01/09/2024] [Accepted: 01/26/2024] [Indexed: 03/13/2024]
Abstract
BACKGROUND Most patients with chronic lymphocytic leukaemia progress after treatment or retreatment with targeted therapy or chemoimmunotherapy and have limited subsequent treatment options. Response levels to the single-agent venetoclax in the relapsed setting is unknown. We aimed to assess venetoclax activity in patients with or without previous B-cell receptor-associated kinase inhibitor (BCRi) treatment. METHODS This multicentre, open-label, single-arm, phase 3b trial (VENICE-1) assessed activity and safety of venetoclax monotherapy in adults with relapsed or refractory chronic lymphocytic leukaemia, stratified by previous exposure to a BCRi. Eligible participants were aged 18 years or older with previously treated relapsed or refractory chronic lymphocytic leukaemia. Presence of del(17p) or TP53 aberrations and previous BCRi treatment were permitted. Patients received 5-week ramp-up to 400 mg of oral venetoclax once daily and were treated for up to 108 weeks, with 2 years follow-up after discontinuation, or optional extended access. The primary activity endpoint was complete remission rate (complete remission or complete remission with incomplete marrow recovery) in BCRi-naive patients. Analyses used the intent-to-treat (ie, all enrolled patients, which coincided with those who received at least one dose of venetoclax). This study was registered with ClinicalTrials.gov, NCT02756611, and is complete. FINDINGS Between June 22, 2016, and March 11, 2022, we enrolled 258 patients with relapsed or refractory chronic lymphocytic leukaemia (180 [70%] were male; 252 [98%] were White; 191 were BCRi-naive and 67 were BCRi-pretreated). Median follow-up in the overall cohort was 49·5 months (IQR 47·2-54·1), 49·2 months (47·2-53·2) in the BCRi-naive group, and 49·7 months (47·4-54·3) in the BCRi-pretreated group. Of 191 BCRi-naive patients, 66 (35%; 95% CI 27·8-41·8) had complete remission or complete remission with incomplete marrow recovery. 18 (27%; 95% CI 16·8-39·1) of 67 patients in the BCRi-pretreated group had complete remission or complete remission with incomplete marrow recovery. Grade 3 or worse treatment-emergent adverse events were reported in 203 (79%) and serious adverse events were reported in 136 (53%) of 258 patients in the overall cohort. The most common treatment-emergent adverse event was neutropenia (96 [37%]) and the most common and serious adverse event was pneumonia (21 [8%]). There were 13 (5%) deaths reported due to adverse events; one of these deaths (autoimmune haemolytic anaemia) was possibly related to venetoclax. No new safety signals were identified. INTERPRETATION These data demonstrate deep and durable responses with venetoclax monotherapy in patients with relapsed or refractory chronic lymphocytic leukaemia, including BCRi-pretreated patients, suggesting that venetoclax monotherapy is an effective strategy for treating BCRi-naive and BCRi-pretreated patients. FUNDING AbbVie.
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Affiliation(s)
- Arnon P Kater
- Department of Hematology, Cancer Center Amsterdam, Lymphoma and Myeloma Center Amsterdam, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Önder Arslan
- Department of Hematology, Faculty of Medicine, Ankara University, Ankara, Turkey
| | - Fatih Demirkan
- Department of Hematology, Faculty of Medicine, Dokuz Eylül University, Izmir, Turkey
| | - Yair Herishanu
- Department of Hematology, Tel-Aviv Sourasky Medical Center, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Burhan Ferhanoglu
- Department of Hematology, Koç University Medical Faculty, Istanbul, Turkey
| | - Marcos Gonzalez Diaz
- Department of Hematology, University Hospital of Salamanca (HUS/IBSAL), CIBERONC and Cancer Research Institute of Salamanca-IBMCC (USAL-CSIC), Salamanca, Spain
| | - Brian Leber
- Division of Hematology and Thromboembolism, Department of Medicine, McMaster University, Hamilton, ON, Canada
| | - Marco Montillo
- Department of Haematology, Niguarda Cancer Center, Niguarda Hospital, Milan, Italy
| | - Panayiotis Panayiotidis
- First Department of Propedeutic Internal Medicine, National and Kapodistrian University of Athens, Laikon University Hospital, Athens, Greece
| | - Davide Rossi
- Institute of Oncology Research, Università della Svizzera Italiana, Bellinzona, Switzerland; Oncology Institute of Southern Switzerland, Bellinzona, Switzerland
| | - Alan Skarbnik
- Lymphoproliferative Disorders Program, Novant Health Cancer Institute, Charlotte, NC, USA; John Theurer Cancer Center, Hackensack, NJ, USA
| | - Adrian Tempescul
- Department of Clinical Hematology, University Teaching Hospital Brest, Brest, France
| | - Mehmet Turgut
- Department of Hematology, Ondokuz Mayıs University Faculty of Medicine, Samsun, Turkey
| | - Clemens H Mellink
- Department of Human Genetics, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | | | - Stuart Lanham
- Cancer Sciences, Faculty of Medicine, University of Southampton, Southampton, UK
| | - Ben Sale
- Cancer Sciences, Faculty of Medicine, University of Southampton, Southampton, UK
| | - Luis Del Rio
- Cancer Sciences, Faculty of Medicine, University of Southampton, Southampton, UK
| | | | | | | | | | | | | | | | | | - Francesco Forconi
- Cancer Sciences, Faculty of Medicine, University of Southampton, Southampton, UK; Haematology Department, Cancer Care Directorate, University Hospital Southampton NHS Trust, Southampton, UK.
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Cerveira N, Santos J, Bizarro S, Costa V, Ribeiro FR, Lisboa S, Correia C, Torres L, Vieira J, Snijder S, Mariz JM, Norton L, Mellink CH, Buijs A, Teixeira MR. Both SEPT2 and MLL are down-regulated in MLL-SEPT2 therapy-related myeloid neoplasia. BMC Cancer 2009; 9:147. [PMID: 19445675 PMCID: PMC2689242 DOI: 10.1186/1471-2407-9-147] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2008] [Accepted: 05/15/2009] [Indexed: 01/18/2023] Open
Abstract
Background A relevant role of septins in leukemogenesis has been uncovered by their involvement as fusion partners in MLL-related leukemia. Recently, we have established the MLL-SEPT2 gene fusion as the molecular abnormality subjacent to the translocation t(2;11)(q37;q23) in therapy-related acute myeloid leukemia. In this work we quantified MLL and SEPT2 gene expression in 58 acute myeloid leukemia patients selected to represent the major AML genetic subgroups, as well as in all three cases of MLL-SEPT2-associated myeloid neoplasms so far described in the literature. Methods Cytogenetics, fluorescence in situ hybridization (FISH) and molecular studies (RT-PCR, qRT-PCR and qMSP) were used to characterize 58 acute myeloid leukemia patients (AML) at diagnosis selected to represent the major AML genetic subgroups: CBFB-MYH11 (n = 13), PML-RARA (n = 12); RUNX1-RUNX1T1 (n = 12), normal karyotype (n = 11), and MLL gene fusions other than MLL-SEPT2 (n = 10). We also studied all three MLL-SEPT2 myeloid neoplasia cases reported in the literature, namely two AML patients and a t-MDS patient. Results When compared with normal controls, we found a 12.8-fold reduction of wild-type SEPT2 and MLL-SEPT2 combined expression in cases with the MLL-SEPT2 gene fusion (p = 0.007), which is accompanied by a 12.4-fold down-regulation of wild-type MLL and MLL-SEPT2 combined expression (p = 0.028). The down-regulation of SEPT2 in MLL-SEPT2 myeloid neoplasias was statistically significant when compared with all other leukemia genetic subgroups (including those with other MLL gene fusions). In addition, MLL expression was also down-regulated in the group of MLL fusions other than MLL-SEPT2, when compared with the normal control group (p = 0.023) Conclusion We found a significant down-regulation of both SEPT2 and MLL in MLL-SEPT2 myeloid neoplasias. In addition, we also found that MLL is under-expressed in AML patients with MLL fusions other than MLL-SEPT2.
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Affiliation(s)
- Nuno Cerveira
- Department of Genetics, Portuguese Oncology Institute, Porto, Portugal.
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Abstract
Selective silver staining was used to investigate the cellular distribution of numbers of nucleolar organizer regions (NORs) in domestic pigs (Sus scrofa) of eight different breeds, the European wild boar (S. scrofa scrofa), Indonesian wild boar (S. scrofa vittatus), Javan warty pig (S. verrucosus), Sulawesi warty pig (S. celebensis), and pigmy hog (S. salvanius). In the domestic pig as well as in the wild (sub)species of Sus, actively transcribing ribosomal RNA genes were found to be present in the secondary constrictions of chromosome pairs 10 and 8. Chromosomes 10 were consistently Ag-positive. Chromosomes 8 less frequently showed Ag-NORs, resulting in different mean numbers of Ag-NORs per individual animal. Mean Ag-NOR numbers per breed or (sub)species were generally higher in the wild representatives of Sus than in the domestic breeds. The highest mean numbers of Ag-NORs were observed in the Meishan breed and in S. celebensis and S. salvanius. The Meishan breed appears to be conservative in Ag-NOR staining pattern, being more comparable to the Asian wild Suidae than to the European breeds.
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Affiliation(s)
- C H Mellink
- Department of Cell Biology and Histology, Faculty of Veterinary Medicine, University of Utrecht, The Netherlands
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Abstract
Variation of the size of silver-stained nucleolar organizer regions (NORs) of chromosomes 10 and 8 was studied in pigs of six breeds (Sus scrofa L.). The silver deposits were quantified by image analysis and the results were normalized for each Ag-NOR chromosome. In general, normalized values for chromosomes 10 were higher than those for chromosomes 8, suggesting that the NOR activity of chromosomes 10 is dominant as compared to that of chromosomes 8. However, high values for chromosomes 8 were found in the Meishan breed and in some Piétrain pigs, indicating a high transcriptional activity of the rRNA genes on these chromosomes. In some pigs, the relative quantities of rDNA in chromosomes 10 and 8 were investigated by fluorescent in situ hybridization and the results were compared with those of the silver staining procedure. It is concluded that Ag-NOR sizes on chromosomes 10 are relatively well correlated to the number of rRNA genes, whereas the absence or the small size of Ag-NORs on chromosomes 8, often observed in pigs, is the result of low NOR activity rather than of absence of rDNA.
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Affiliation(s)
- C H Mellink
- Department of Cell Biology and Histology, Faculty of Veterinary Medicine, Utrecht University, The Netherlands
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Zijlstra C, Mellink CH, de Haan NA, Bosma AA. Localization of the 18S, 5.8S and 28S rRNA genes and the 5S rRNA genes in the babirusa and the white-lipped peccary. Cytogenet Cell Genet 1997; 77:273-7. [PMID: 9284936 DOI: 10.1159/000134596] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The locations of the genes encoding 18S, 5.8S and 28S rRNA and 5S rRNA were studied in two relatives of the domestic pig, the babirusa (Babyrousa babyrussa) and the white-lipped peccary (Tayassu pecari). In the babirusa, the 18S, 5.8S and 28S rDNA is located on chromosomes 6, 8 and 10. The genes on chromosomes 8 and 10 are actively transcribed, in contrast to those on chromosomes 6. In the white-lipped peccary, this rDNA was found to be located on chromosomes 4 and 8. The genes on both of these pairs of chromosomes are actively transcribed. The 5S rDNA was physically mapped to chromosome 16 in the babirusa, and to chromosome 11 in the white-lipped peccary. These data are compared to similar data obtained for the domestic pig, and confirm previously recognized chromosome homologies.
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Affiliation(s)
- C Zijlstra
- Department of Cell Biology and Histology, Faculty of Veterinary Medicine, Utrecht University, The Netherlands.
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Archibald AL, Couperwhite S, Mellink CH, Lahbib-Mansais Y, Gellin J. Porcine alpha-1-antitrypsin (PI): cDNA sequence, polymorphism and assignment to chromosome 7q2.4- > q2.6. Anim Genet 1996; 27:85-9. [PMID: 8856896 DOI: 10.1111/j.1365-2052.1996.tb00472.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A cDNA clone encoding the complete coding sequence for porcine alpha-1-antitrypsin (or alpha 1-protease inhibitor, PI) was isolated and its DNA sequence determined. The cDNA is assumed to encode alpha-1-antitrypsin on the basis of its sequence similarity to the corresponding cDNAs for human, baboon, rat, mouse, sheep and cow. The porcine cDNA clone was used in conjunction with BamHI, KpnI, MspI, SacI, TaqI and XbaI to develop restriction fragment length polymorphism-based genetic markers for linkage mapping in pigs. The cDNA has also been used to map the porcine PI locus to chromosome 7q2.4- > q2.6 by radioactive in situ hybridization. Thus, the PI locus has been added to the developing physical and genetic maps of the porcine genome.
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