The treatment of relapsed/refractory acute myeloid leukemia (AML) is associated with a dismal prognosis. The allogeneic hematopoietic cell transplantation (allo-HCT) is frequently performed as salvage therapy. Reduced intensity conditioning protocols have been developed with the aim of reducing the leukemia burden without increasing their toxicity. We compared the reduced intensity conditioning FM140 (fludarabine, 150 mg/m2; melphalan 140 mg/m2) with FBM110 (fludarabine 150 mg/m2; BCNU, also known as carmustine, 300-400 mg/m2; and melphalan 110 mg/m2). From the European Bone Marrow Transplantation (EBMT) Acute Leukemia Working Party registry, we identified 293 adult patients (FM140, n = 118 and FBM110, n = 175) with AML with relapsed/refractory disease prior to allo-HCT. There were some differences such as age (FM140 = 59.5 years vs. FBM110 = 65.1 years, p < 0.001) and graft-versus-host disease (GvHD) prophylaxis based on in vivo T-cell depletion (TCD, FM140 = 39% vs. FBM110 = 75%, p < 0.001). No differences were observed between FM140- and FBM110-treated patients regarding overall survival (OS) (2-year OS: 39.3% vs. 45.7%, p = 0.58), progression-free survival (PFS) (2-year PFS: 36.1% vs. 37.3%, p = 0.69), non-relapse mortality (NRM) (2-year NRM: 15.3% vs. 25.7%, p = 0.10) and relapse incidence (RI) (2-year RI: 48.6% vs. 37.0%, p = 0.7). In conclusion, despite differences in age and GvHD prophylaxis, AML patients with active disease undergoing allo-HCT after FBM110 conditioning showed similar outcomes compared to FM140.
- MeSH
- akutní myeloidní leukemie * terapie mortalita MeSH
- dospělí MeSH
- homologní transplantace metody MeSH
- karmustin terapeutické užití aplikace a dávkování MeSH
- lidé středního věku MeSH
- lidé MeSH
- melfalan * terapeutické užití aplikace a dávkování MeSH
- příprava pacienta k transplantaci metody MeSH
- protokoly protinádorové kombinované chemoterapie terapeutické užití MeSH
- recidiva MeSH
- registrace * MeSH
- senioři MeSH
- transplantace hematopoetických kmenových buněk * metody MeSH
- vidarabin * analogy a deriváty terapeutické užití aplikace a dávkování MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- multicentrická studie MeSH
- srovnávací studie MeSH
The superiority of total body irradiation (TBI)-based vs chemotherapy conditioning for allogeneic hematopoietic stem cell transplantation (allo-HSCT) in children with acute lymphoblastic leukemia (ALL) has been established in the international, prospective phase-3 FORUM study, randomizing 417 patients aged 4-18 years in complete remission (CR), who received allo-HSCT from HLA-matched sibling or unrelated donors. Because of the unavailability of TBI in some regions and to accommodate individual contraindications, this study reports the prespecified comparison of outcomes of patients receiving busulfan (BU)- or treosulfan (TREO)-based regimens from 2013 to 2018. Overall, 180 and 128 patients received BU/thiotepa (THIO)/fludarabine (FLU) or TREO/THIO/FLU, respectively. Data were analyzed as of February 2023, with a median follow-up of 4.2 years (range, 0.3-9.1). 3-year overall survival was 0.71 (BU, 95% confidence interval [0.64-0.77]) and 0.72 (TREO, [0.63-0.79]) and 3-year event-free survival was 0.60 (BU, [0.53-0.67]) and 0.55 (TREO, [0.46-0.63]). The 3-year cumulative incidence of relapse (BU, 0.31 [0.25-0.38]; TREO, 0.36 [0.27-0.44]); and nonrelapse mortality (BU, 0.08 [0.05-0.13]; TREO, 0.09 [0.05-0.15]) were comparable. One case of fatal veno-occlusive disease occurred in each group. No significant differences in acute and chronic graft-versus-host disease (GVHD) or 3-year GVHD-free and relapse-free survival (BU, 0.48 [0.41-0.55]; TREO, 0.45 [0.37-0.54]) were recorded. Outcomes for patients in first and second CR were similar irrespective of the regimen. In conclusion, BU/THIO/FLU or TREO/THIO/FLU regimens can be an alternative to TBI for patients with ALL aged >4 years with contraindications or lack of access to TBI. This trial was registered at www.ClinicalTrials.gov as #NCT01949129.
- MeSH
- akutní lymfatická leukemie * terapie mortalita MeSH
- busulfan * analogy a deriváty terapeutické užití MeSH
- dítě MeSH
- homologní transplantace MeSH
- lidé MeSH
- mladiství MeSH
- nemoc štěpu proti hostiteli * etiologie MeSH
- předškolní dítě MeSH
- příprava pacienta k transplantaci * metody MeSH
- transplantace hematopoetických kmenových buněk * škodlivé účinky MeSH
- vidarabin analogy a deriváty terapeutické užití aplikace a dávkování MeSH
- výsledek terapie MeSH
- Check Tag
- dítě MeSH
- lidé MeSH
- mladiství MeSH
- mužské pohlaví MeSH
- předškolní dítě MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- multicentrická studie MeSH
- randomizované kontrolované studie MeSH
- srovnávací studie MeSH
BACKGROUND: Whether fixed-duration acalabrutinib-venetoclax (with or without obinutuzumab) would result in better progression-free survival than chemoimmunotherapy in patients with untreated chronic lymphocytic leukemia (CLL) is unknown. METHODS: In this phase 3, open-label trial, we included patients 18 years of age or older who had an Eastern Cooperative Oncology Group performance-status score of 0 to 2 (range, 0 to 5, with higher numbers indicating greater disability) and who did not have a 17p deletion or TP53 mutation. Patients were randomly assigned, in a 1:1:1 ratio, to receive acalabrutinib-venetoclax (acalabrutinib, cycles 1 to 14; venetoclax, cycles 3 to 14), acalabrutinib-venetoclax-obinutuzumab (as above, plus obinutuzumab, cycles 2 to 7), or chemoimmunotherapy with the investigator's choice of fludarabine-cyclophosphamide-rituximab or bendamustine-rituximab (cycles 1 to 6). The primary end point was progression-free survival (acalabrutinib-venetoclax vs. chemoimmunotherapy) in the intention-to-treat population, assessed by blinded independent central review. RESULTS: A total of 867 patients underwent randomization: 291 were assigned to receive acalabrutinib-venetoclax, 286 acalabrutinib-venetoclax-obinutuzumab, and 290 chemoimmunotherapy (of whom 143 received fludarabine-cyclophosphamide-rituximab and 147 bendamustine-rituximab). The median age of the patients was 61 years (range, 26 to 86), 64.5% were men, and 58.6% had unmutated IGHV. Estimated 36-month progression-free survival at a median follow-up of 40.8 months was 76.5% with acalabrutinib-venetoclax, 83.1% with acalabrutinib-venetoclax-obinutuzumab, and 66.5% with chemoimmunotherapy (hazard ratio for disease progression or death with acalabrutinib-venetoclax vs. chemoimmunotherapy, 0.65 [95% confidence interval {CI}, 0.49 to 0.87], P = 0.004; for the comparison of acalabrutinib-venetoclax-obinutuzumab with chemoimmunotherapy, P<0.001). Estimated 36-month overall survival was 94.1% with acalabrutinib-venetoclax, 87.7% with acalabrutinib-venetoclax-obinutuzumab, and 85.9% with chemoimmunotherapy. Neutropenia, the most common adverse event of clinical interest of grade 3 or higher, was reported in 32.3%, 46.1%, and 43.2% in the three groups, respectively; death from coronavirus disease 2019 was reported in 10, 25, and 21 patients in the three groups. CONCLUSIONS: Acalabrutinib-venetoclax with or without obinutuzumab significantly prolonged progression-free survival as compared with chemoimmunotherapy in fit patients with previously untreated CLL. (Funded by AstraZeneca; AMPLIFY ClinicalTrials.gov number, NCT03836261.).
- MeSH
- benzamidy * škodlivé účinky aplikace a dávkování MeSH
- bicyklické sloučeniny heterocyklické * aplikace a dávkování škodlivé účinky terapeutické užití MeSH
- chronická lymfatická leukemie * farmakoterapie mortalita MeSH
- cyklofosfamid * aplikace a dávkování škodlivé účinky MeSH
- doba přežití bez progrese choroby * MeSH
- dospělí MeSH
- humanizované monoklonální protilátky aplikace a dávkování škodlivé účinky MeSH
- lidé středního věku MeSH
- lidé MeSH
- protokoly protinádorové kombinované chemoterapie * terapeutické užití škodlivé účinky MeSH
- pyraziny * škodlivé účinky aplikace a dávkování MeSH
- rituximab * aplikace a dávkování škodlivé účinky MeSH
- senioři nad 80 let MeSH
- senioři MeSH
- sulfonamidy * aplikace a dávkování škodlivé účinky MeSH
- vidarabin analogy a deriváty aplikace a dávkování škodlivé účinky MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- senioři nad 80 let MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- klinické zkoušky, fáze III MeSH
- multicentrická studie MeSH
- randomizované kontrolované studie MeSH
- srovnávací studie MeSH
Optimal conditioning for adults with acute lymphoblastic leukemia (ALL) treated with haploidentical hematopoietic cell transplantation (haplo-HCT) and post-transplant cyclophosphamide has not been established so far. We retrospectively compared outcomes for two myeloablative regimens: fludarabine + total body irradiation (Flu-TBI, n = 117) and thiotepa + iv. busulfan + fludarabine (TBF, n = 119). Patients transplanted either in complete remission (CR) or with active disease were included in the analysis. The characteristics of both groups were comparable except for patients treated with TBF were older. In univariate analysis the incidence of non-relapse mortality (NRM) at 2 years was increased for TBF compared to Flu-TBI (31% vs. 19.5%, p = 0.03). There was a tendency towards reduced incidence of relapse after TBF (p = 0.11). Results of multivariate analysis confirmed a reduced risk of NRM using Flu-TBI (HR = 0.49, p = 0.03). In the analysis restricted to patients treated in CR1 or CR2, the use of Flu-TBI was associated with a decreased risk of NRM (HR = 0.34, p = 0.009) but an increased risk of relapse (HR = 2.59, p = 0.01) without significant effect on survival and graft-versus-host disease. We conclude that for haplo-HCT recipients with ALL, Flu-TBI may be preferable for individuals at high risk of NRM while TBF should be considered in cases at high risk of relapse.
- MeSH
- akutní lymfatická leukemie * komplikace terapie MeSH
- akutní myeloidní leukemie * terapie MeSH
- busulfan škodlivé účinky MeSH
- celotělové ozáření škodlivé účinky MeSH
- dospělí MeSH
- lidé MeSH
- nemoc štěpu proti hostiteli * etiologie MeSH
- příprava pacienta k transplantaci metody MeSH
- recidiva MeSH
- retrospektivní studie MeSH
- thiotepa škodlivé účinky MeSH
- transplantace hematopoetických kmenových buněk * škodlivé účinky MeSH
- vidarabin analogy a deriváty MeSH
- Check Tag
- dospělí MeSH
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
PURPOSE: Total body irradiation (TBI) before allogeneic hematopoietic stem cell transplantation (HSCT) in pediatric patients with acute lymphoblastic leukemia (ALL) is efficacious, but long-term side effects are concerning. We investigated whether preparative combination chemotherapy could replace TBI in such patients. PATIENTS AND METHODS: FORUM is a randomized, controlled, open-label, international, multicenter, phase III, noninferiority study. Patients ≤ 18 years at diagnosis, 4-21 years at HSCT, in complete remission pre-HSCT, and with an HLA-compatible related or unrelated donor were randomly assigned to myeloablative conditioning with fractionated 12 Gy TBI and etoposide versus fludarabine, thiotepa, and either busulfan or treosulfan. The noninferiority margin was 8%. With 1,000 patients randomly assigned in 5 years, 2-year minimum follow-up, and one-sided alpha of 5%, 80% power was calculated. A futility stopping rule would halt random assignment if chemoconditioning was significantly inferior to TBI (EudraCT: 2012-003032-22; ClinicalTrials.gov: NCT01949129). RESULTS: Between April 2013 and December 2018, 543 patients were screened, 417 were randomly assigned, 212 received TBI, and 201 received chemoconditioning. The stopping rule was applied on March 31, 2019. The median follow-up was 2.1 years. In the intention-to-treat population, 2-year overall survival (OS) was significantly higher following TBI (0.91; 95% CI, 0.86 to 0.95; P < .0001) versus chemoconditioning (0.75; 95% CI, 0.67 to 0.81). Two-year cumulative incidence of relapse and treatment-related mortality were 0.12 (95% CI, 0.08 to 0.17; P < .0001) and 0.02 (95% CI, < 0.01 to 0.05; P = .0269) following TBI and 0.33 (95% CI, 0.25 to 0.40) and 0.09 (95% CI, 0.05 to 0.14) following chemoconditioning, respectively. CONCLUSION: Improved OS and lower relapse risk were observed following TBI plus etoposide compared with chemoconditioning. We therefore recommend TBI plus etoposide for patients > 4 years old with high-risk ALL undergoing allogeneic HSCT.
- MeSH
- akutní lymfatická leukemie patologie terapie MeSH
- busulfan aplikace a dávkování analogy a deriváty MeSH
- celotělové ozáření mortalita MeSH
- chemoradioterapie mortalita MeSH
- dítě MeSH
- etoposid aplikace a dávkování MeSH
- hodnocení ekvivalence jako téma MeSH
- lidé MeSH
- mezinárodní agentury MeSH
- míra přežití MeSH
- mladiství MeSH
- následné studie MeSH
- předškolní dítě MeSH
- prognóza MeSH
- protokoly protinádorové kombinované chemoterapie terapeutické užití MeSH
- thiotepa aplikace a dávkování MeSH
- vidarabin aplikace a dávkování analogy a deriváty MeSH
- Check Tag
- dítě MeSH
- lidé MeSH
- mladiství MeSH
- mužské pohlaví MeSH
- předškolní dítě MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- klinické zkoušky, fáze III MeSH
- multicentrická studie MeSH
- práce podpořená grantem MeSH
- randomizované kontrolované studie MeSH
Therapeutic options used to be very limited for treatment-naïve elderly/comorbid patients with chronic lymphocytic leukaemia/small lymphocytic lymphoma (CLL/SLL) before the introduction of chemo-immunotherapy. Because dose-reduced fludarabine-based regimens yielded promising results, the Czech CLL Study Group initiated a prospective observational study to assess safety and efficacy of low-dose fludarabine and cyclophosphamide combined with rituximab (FCR) in elderly/comorbid patients. Between March 2009 and July 2012, we enrolled 107 patients considered ineligible for full-dose FCR (median age, 70 years; median Cumulative Illness Rating Scale score, 5; median creatinine clearance, 69 ml/min). Notably, 77% patients had unfavourable biological prognosis [unmutated immunoglobulin heavy-chain variable-region gene (IGHV), 74%; deletion 17p, 9%). Fludarabine was reduced to 12 mg/m2 intravenously (iv) or 20 mg/m2 orally on days 1-3 and cyclophosphamide to 150 mg/m2 iv/orally on days 1-3. Grade 3-4 neutropenia occurred in 56% of the patients, but there were serious infections in only 15%. The median progression-free survival was 29 months, but was markedly longer in patients with mutated IGHV (median 53 months), especially in absence of del 11q or 17p (median 74 months). Low-dose FCR is a well-tolerated and effective first-line regimen for selected elderly/comorbid patients with CLL/SLL with favourable biology. The study was registered at clinicaltrials.gov (NCT02156726).
- MeSH
- chronická lymfatická leukemie farmakoterapie mortalita MeSH
- cyklofosfamid aplikace a dávkování škodlivé účinky MeSH
- lidé MeSH
- míra přežití MeSH
- následné studie MeSH
- přežití bez známek nemoci MeSH
- protokoly protinádorové kombinované chemoterapie aplikace a dávkování škodlivé účinky MeSH
- rituximab aplikace a dávkování škodlivé účinky MeSH
- senioři MeSH
- vidarabin aplikace a dávkování škodlivé účinky analogy a deriváty MeSH
- Check Tag
- lidé MeSH
- mužské pohlaví MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- klinické zkoušky MeSH
- multicentrická studie MeSH
- práce podpořená grantem MeSH
- Geografické názvy
- Česká republika MeSH
PURPOSE: In an update of the randomized, open-label, phase III European Mantle Cell Lymphoma (MCL) Elderly trial (ClinicalTrials.gov identifier: NCT00209209), published in 2012, we aimed to confirm results on long-term outcome focusing on efficacy and safety of long-term use of rituximab maintenance. PATIENTS AND METHODS: Five hundred sixty patients with newly diagnosed MCL underwent a first random assignment between rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone (R-CHOP) and rituximab, fludarabine, and cyclophosphamide (R-FC) induction, followed by a second random assignment in 316 responders between rituximab and interferon alfa maintenance, to be continued until progression. We compared progression-free survival from the second randomization and overall survival (OS) from the first or second randomizations. RESULTS: After a median follow-up time of 7.6 years, the previously described difference in OS between the induction arms persisted (median, 6.4 years after R-CHOP [n = 280] v 3.9 years after R-FC [n = 280]; P = .0054). Patients responding to R-CHOP had median progression-free survival and OS times of 5.4 and 9.8 years, respectively, when randomly assigned to rituximab (n = 87), compared with 1.9 years (P < .001) and 7.1 years (P = .0026), respectively, when randomly assigned to interferon alfa (n = 97). In 58% and 32% of patients treated with R-CHOP, rituximab maintenance was still ongoing 2 and 5 years from start of maintenance, respectively. After R-FC, rituximab maintenance was associated with an unexpectedly high cumulative incidence of death in remission (22% at 5 years). Toxicity of rituximab maintenance was low after R-CHOP (grade 3-4 leukopenia or infection < 5%) but more prominent in patients on rituximab maintenance after R-FC, in whom grade 3-4 leukopenia (up to 40%) and infections were frequent (up to 15%). CONCLUSION: The excellent results of R-CHOP followed by rituximab maintenance until progression for older patients with MCL persisted in a mature follow-up. Prolongation of rituximab maintenance beyond 2 years is effective and safe.
- MeSH
- čas MeSH
- cyklofosfamid aplikace a dávkování MeSH
- doba přežití bez progrese choroby MeSH
- doxorubicin aplikace a dávkování MeSH
- indukční chemoterapie metody MeSH
- lidé středního věku MeSH
- lidé MeSH
- lymfom z plášťových buněk farmakoterapie MeSH
- následné studie MeSH
- prednison aplikace a dávkování MeSH
- protokoly protinádorové kombinované chemoterapie terapeutické užití MeSH
- rituximab aplikace a dávkování MeSH
- senioři nad 80 let MeSH
- senioři MeSH
- udržovací chemoterapie metody MeSH
- vidarabin aplikace a dávkování analogy a deriváty MeSH
- vinkristin aplikace a dávkování MeSH
- Check Tag
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- senioři nad 80 let MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- klinické zkoušky, fáze III MeSH
- práce podpořená grantem MeSH
- randomizované kontrolované studie MeSH
Poznatky týkající se vlivu minimální/měřitelné nemoci přítomné v době transplantace na výsledné ukazatele akutní myeloidní leukemie (AML) po haploidentické transplantaci (haplo-SCT) jsou rozporuplné. Zhodnotili jsme dopad stavu nemoci před transplantací na potransplantační výsledné ukazatele u 143 pacientů, jimž byla po přípravném režimu s fludarabinem a melfalanem (FM) provedena haplo-SCT a kteří dostávali po transplantaci cyklofosfamid (PTCy – post- -transplant cyclophosphamide). Při době sledování s mediánem 29 měsíců bylo dvouleté přežiঠ bez progrese onemocnění (PFS – progression-free survival) v souboru všech pacientů 41 %. V porovnání s pacienty v kompletní remisi (CR – complete remission) při transplantaci měli pacienti s aktivní nemocí (n = 29) a pacienti v CR s neúplným obnovením krevního obrazu (CRi – incomplete count recovery) (n = 39) horší PFS. Poměry rizik (HR – hazard ratio) v těchto skupinách byly 3,5 (95% CI: 2,05–6,1; P < 0,001) a 2,3 (95% CI: 1,3–3,9; P = 0,002), v uvedeném pořadí. U pacientů, kteří byli při transplantaci v CR, jsme nezaznamenali žádné rozdíly v PFS mezi těmi, kteří měli pozitivní minimální reziduální nemoc (MRD – minimal residual disease) (n = 24), a těmi s negativní MRD (n = 41) (HR 1,85, 95% CI: 0,9–4,0; P = 0,1). V mnohorozměrné analýze pacientů v CR predikoval výsledný stav pouze věk, a stav MRD při transplantaci neměl na výsledné ukazatele léčby vliv. Naše poznatky nasvědčují tomu, že haplo-SCT s přípravným režimem FM a profylaxí GVHD založenou na PTCy má protektivní účinek a potenciálně může u pacientů s AML zlepšit nepříznivé výsledky spojené s pozitivitou MRD. Pro pacienty s pozitivní MRD může být urychlené provedení haplo-SCT významnou pomocí, protože na výsledky transplantace nejspíš nemá negativní vliv.
- MeSH
- akutní myeloidní leukemie * terapie MeSH
- dospělí MeSH
- haploidentická transplantace metody statistika a číselné údaje MeSH
- Kaplanův-Meierův odhad MeSH
- lidé středního věku MeSH
- lidé MeSH
- melfalan terapeutické užití MeSH
- nemoc štěpu proti hostiteli etiologie MeSH
- přežití bez známek nemoci MeSH
- příprava pacienta k transplantaci metody statistika a číselné údaje MeSH
- retrospektivní studie MeSH
- reziduální nádor komplikace MeSH
- senioři MeSH
- statistika jako téma MeSH
- transplantace hematopoetických kmenových buněk * metody statistika a číselné údaje MeSH
- vidarabin analogy a deriváty terapeutické užití MeSH
- výsledek terapie MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- senioři MeSH
- Publikační typ
- srovnávací studie MeSH
Treosulfan-based conditioning prior to allogeneic transplantation has been shown to have myeloablative, immunosuppressive, and antineoplastic effects associated with reduced non-relapse mortality (NRM) in adults. Therefore, we prospectively evaluated the safety and efficacy of treosulfan-based conditioning in children with hematological malignancies in this phase II trial. Overall, 65 children with acute lymphoblastic leukemia (35.4%), acute myeloid leukemia (44.6%), myelodysplastic syndrome (15.4%), or juvenile myelomonocytic leukemia (4.6%) received treosulfan intravenously at a dose of 10 mg/m2/day (7.7%), 12 g/m2/day (35.4%), or 14 g/m2/day (56.9%) according to their individual body surface area in combination with fludarabine and thiotepa. The incidence of complete donor chimerism at day +28 was 98.4% with no primary and only one secondary graft failure. At 36 months, NRM was only 3.1%, while relapse incidence was 21.7%, and overall survival was 83.0%. The cumulative incidence of acute graft-vs.-host disease was 45.3% for grades I-IV and 26.6% for grades II-IV. At 36 months, 25.8% overall and 19.4% moderate/severe chronic graft-vs.-host disease were reported. These data confirm the safe and effective use of treosulfan-based conditioning in pediatric patients with hematological malignancies. Therefore, treosulfan/fludarabine/thiotepa can be recommended for myeloablative conditioning in children with hematological malignancies.
- MeSH
- busulfan analogy a deriváty MeSH
- dítě MeSH
- hematologické nádory * terapie MeSH
- lidé MeSH
- nemoc štěpu proti hostiteli * MeSH
- příprava pacienta k transplantaci * MeSH
- thiotepa MeSH
- transplantace hematopoetických kmenových buněk * MeSH
- vidarabin analogy a deriváty MeSH
- Check Tag
- dítě MeSH
- lidé MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
BACKGROUND: In order to gain insight into the contribution of DNA methylation to disease progression of chronic lymphocytic leukemia (CLL), using 450K Illumina arrays, we determined the DNA methylation profiles in paired pre-treatment/relapse samples from 34 CLL patients treated with chemoimmunotherapy, mostly (n = 31) with the fludarabine-cyclophosphamide-rituximab (FCR) regimen. RESULTS: The extent of identified changes in CLL cells versus memory B cells from healthy donors was termed "epigenetic burden" (EB) whereas the number of changes between the pre-treatment versus the relapse sample was termed "relapse changes" (RC). Significant (p < 0.05) associations were identified between (i) high EB and short time-to-first-treatment (TTFT); and, (ii) few RCs and short time-to-relapse. Both the EB and the RC clustered in specific genomic regions and chromatin states, including regulatory regions containing binding sites of transcription factors implicated in B cell and CLL biology. CONCLUSIONS: Overall, we show that DNA methylation in CLL follows different dynamics in response to chemoimmunotherapy. These epigenetic alterations were linked with specific clinical and biological features.
- MeSH
- chronická lymfatická leukemie farmakoterapie genetika MeSH
- cyklofosfamid farmakologie terapeutické užití MeSH
- dospělí MeSH
- epigeneze genetická účinky léků MeSH
- genové regulační sítě účinky léků MeSH
- imunoterapie MeSH
- lidé středního věku MeSH
- lidé MeSH
- longitudinální studie MeSH
- metylace DNA účinky léků MeSH
- progrese nemoci MeSH
- rituximab farmakologie terapeutické užití MeSH
- sekvenční analýza hybridizací s uspořádaným souborem oligonukleotidů MeSH
- senioři MeSH
- vidarabin analogy a deriváty farmakologie terapeutické užití MeSH
- výsledek terapie MeSH
- vysoce účinné nukleotidové sekvenování metody MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH