Clinical Significance of Clonal Cytogenetic Heterogeneity (CCH) at Diagnosis in Adult Patients with Acute Lymphoblastic Leukemia (ALL)

Abstract Background:Although cytogenetic abnormalities at diagnosis are recognized as one of the most potent prognostic factors in acute leukemia patients, CCH acquisition at diagnosis, which are considered as a result of clonal evolution of leukemia cells, is not taken into account in prognostic classifications. Recent studies reported that CCH acquisition was observed in 24 - 32% of adult AML patients with abnormal karyotype, was more likely to occur in patients with older age and complex karyotype, and showed adverse prognostic impact. However, the clinical significance of CCH acquisition has not been investigated in adult ALL patients to date. Patients and methods: Of the 238 adult ALL patients diagnosed between 1990 and 2016, 120 patients with abnormal karyotype at diagnosis, who underwent intensive chemotherapy, were included in this study. CCH was defined as presence of two or more cytogenetically abnormal clones. A defined ancestral clonal evolution included either mother-daughter and/or branched patterns. In the mother-daughter pattern, a daughter clone showed all cytogenetic abnormalities of a mother clone plus additional abnormality(s), which define a distinct subclone. In a branch pattern, all subclones possessed common cytogenetic abnormalities suggesting presence of a common ancestry, but each subclone acquires unique additional abnormality(s), which define them as distinctive subclones. Both patterns of cytogenetic clonal evolution were sometimes seen in a patient. Composite karyotypes were applied to patients where a common ancestry could not be clearly determined because of too complicated cytogenetic findings. Fisher's exact test was used to compare binary variables. The logistic regression model was used for multivariate analysis of predisposing factors. Overall survival (OS) was estimated with the Kaplan-Meier method and compared using the log-rank test. The Cox proportional hazard model was used for multivariate analysis of prognostic factors. Values of p < 0.05 were considered to indicate statistical significance. Results:Of the 120 patients included in this study, 64 patients were male, and 56 were female. The median age was 50 years (range, 16-79 years). Karyotypes at diagnosis were Philadelphia chromosome (Ph) in 56 patients, complex in 15, and t(8;14) in seven. According to the definition described above, 47 patients (39%) showed CCH at diagnosis, and two (4%) among them were categorized as composite karyotype. Of the 45 patients harboring a defined ancestral clonal evolution, numbers of subclones were two, three, and four in 32 patients (68%), 11 (24%), and 2 (4%), respectively. Mother-daughter pattern, branched pattern, and both were seen in 34 patients (76%), 5 (11%), and 6 (13%). In univariate analysis for predisposing factors of CCH acquisition, only younger age was significantly associated with CCH acquisition (48% in age <= 50 vs. 29% in age > 50; p = 0.04), but not karyotype. This statistical significance was confirmed with multivariate analysis (odds ratio = 0.44; p = 0.03). When investigating the prognostic impact of CCH acquisition, patients were divided into Ph-negative or Ph-positive ALL groups. In the 64 Ph-negative ALL patients, the CR rates were not significantly different between patients with or without CCH (78% vs. 78%, respectively; p = 1.00). The OS rates were similar between two groups (26% vs. 39% at five years, respectively; p = 0.56). Multivariate analysis for OS revealed that complex karyotype and t(8;14) were independent prognostic factors, but not CCH acquisition. Likewise, in the 56 Ph-positive ALL patients, CCH acquisition was not significantly associated with the CR rates (92% vs. 78%, respectively; p = 0.27), and the OS rates did not significantly differ between the two groups (34% vs. 40% at five years, respectively; p = 0.90). In multivariate analysis for OS, no independent prognostic factor was identified. Conclusion: Adult ALL patients with abnormal karyotype acquired CCH at diagnosis with a frequency comparable to that of AML patients. However, unlike AML patients, CCH acquisition was more frequently observed in younger population and did not show any prognostic impact in ALL patients. These findings suggested that biological backgrounds of CCH acquisition at diagnosis were possibly different between in patients with ALL and AML. So, to confirm these important findings, clinical studies with larger study subjects are warranted. Disclosures Handa: Celgene: Honoraria, Research Funding, Speakers Bureau; Takeda: Consultancy, Honoraria, Research Funding, Speakers Bureau.

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CpG-Stimulated Cytogenetic Abnormalities Associated with Shorter Time-to-First Treatment

Blood ◽

10.1182/blood.v128.22.4351.4351 ◽

2016 ◽

Vol 128 (22) ◽

pp. 4351-4351

Author(s):

Francesco Paolo Tambaro ◽

Clelia Criscuolo ◽

Nitin Jain ◽

Alessandra Ferrajoli ◽

Philip A Thompson ◽

...

Keyword(s):

Prognostic Factors ◽

Research Funding ◽

Chromosome Abnormalities ◽

Pokeweed Mitogen ◽

Prognostic Impact ◽

Complex Karyotype ◽

Multivariable Model ◽

Cytogenetic Abnormalities ◽

Treatment Naïve ◽

Time To First Treatment

Abstract Background Prognostic factors correlate with clinical outcomes independent of treatment. Many prognostic factors have been identified in CLL. More effective treatments, like B cell receptor (BCR) signaling pathway inhibitors, have the potential to nullify the prognostic impact of some markers. Time-to-first treatment is an endpoint unaffected by choice of treatment. CpG-stimulated metaphase karyotype can reliably and reproducibly identify cytogenetic abnormalities in CLL that may not be seen with standard non-stimulated karyotype or by FISH. Complex cytogenetics, defined as 3 or more chromosome abnormalities identified in 2 or more metaphases was the highest-risk feature for shorter progression-free and overall survival in patients receiving ibrutinib for relapsed/refractory CLL. Complex karyotype is not uncommon among relapsed/refractory CLL cases, particularly those who previously received genotoxic chemotherapy. The frequency and impact of karyotype abnormalities have not previously been reported for treatment-naïve CLL. Methods We evaluated treatment-naïve patients with CLL who had their initial evaluation, which included prognostic factor assessment, at MDACC between July 2013 and June 2016. CpG-stimulated metaphase karyotype of CLL cells from blood or bone marrow was performed by culture of mononuclear cells for 72hrs in media containing CpG-685 (20ug/ml), phorbol 12-myristate 13-acetate (PMA; 0.04ug/ml) and Pokeweed mitogen (PWM; 0.1ug/ml). Banding and analyses were by standard laboratory procedures. Twenty metaphases were analyzed per culture and patients were categorized as having diploid karyotype, a single clonal chromosome abnormality present in more than 1 metaphase, two clonal chromosome abnormities present in more than 1 metaphase, or 3 or more chromosome abnormalities identified in more than 1 metaphase (complex). Results CpG-stimulated karyotype was obtained in 500 treatment-naïve patients with CLL. The frequency and distribution of chromosome abnormalities with other prognostic factors and time-to-first treatment were analyzed (Table). The majority (69%) of patients had diploid cytogenetics. Higher-risk prognostic features such as del(17), del(11q), unmutated IGHV and ZAP70 expression were associated with presence of complex karyotype abnormalities. Shorter time-to-first treatment from diagnosis was associated with 1, 2, and 3 or more clonal chromosome abnormalities compared to diploid karyotype (p=.0005) (Figure). A previous multivariable model identified the following independent characteristics correlated with time-to-first treatment: size of the largest cervical lymph node, number of nodal sites involved, FISH cytogenetics, LDH, and IGHV mutation status (Wierda et al. JCO 29:4088, 2011). We are working to integrate stimulated cytogenetics results into this multivariable model for time-to-first treatment. Conclusions Clonal chromosome abnormalities were identified in nearly 30% of previously untreated patients with CLL and were associated with shorter time-to-first treatment. Analyses are ongoing to determine optimal integration into a multivariable model for time-to-first treatment. Table Table. Figure Figure. Disclosures Jain: Celgene: Research Funding; Novimmune: Consultancy, Honoraria; Genentech: Research Funding; Seattle Genetics: Research Funding; ADC Therapeutics: Consultancy, Honoraria, Research Funding; Incyte: Research Funding; Infinity: Research Funding; Novartis: Consultancy, Honoraria; Abbvie: Research Funding; Pharmacyclics: Consultancy, Honoraria, Research Funding; Servier: Consultancy, Honoraria; Pfizer: Consultancy, Honoraria, Research Funding; BMS: Research Funding. Thompson:Pharmacyclics: Consultancy, Honoraria. Burger:Gilead: Research Funding; Roche: Other: Travel, Accommodations, Expenses; Janssen: Consultancy, Other: Travel, Accommodations, Expenses; Portola: Consultancy; Pharmacyclics, LLC, an AbbVie Company: Research Funding. O'Brien:Pharmacyclics, LLC, an AbbVie Company: Consultancy, Honoraria, Research Funding; Janssen: Consultancy, Honoraria. Wierda:Genentech: Research Funding; Gilead: Research Funding; Acerta: Research Funding; Abbvie: Research Funding; Novartis: Research Funding.

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Prognostic Impacts of Additional Cytogenetic Abnormalities Acquired at the First Relapse in Adult Patients with Acute Myeloid Leukemia Undergoing Allogeneic Stem Cell Transplant in Second Complete Remission

Blood ◽

10.1182/blood-2021-152621 ◽

2021 ◽

Vol 138 (Supplement 1) ◽

pp. 3380-3380

Author(s):

Hiroaki Shimizu ◽

Junichi Mukae ◽

Naoki Shingai ◽

Takashi Toya ◽

Yuho Najima ◽

...

Keyword(s):

Multivariate Analysis ◽

Myeloid Leukemia ◽

Research Funding ◽

Statistical Significance ◽

Cell Transplant ◽

Reduced Intensity Conditioning ◽

Cytogenetic Abnormalities ◽

Cytogenetic Changes ◽

Conditioning Regimens ◽

First Relapse

Abstract Background: Additional cytogenetic abnormalities (ACA), the most frequent form of cytogenetic changes, are considered as a result of genetic instability and clonal evolution of leukemia cells. Recently, we described that ACA at the first relapse was associated with the significantly lower second complete remission (CR2) rate and poor survival in adult acute myeloid leukemia (AML) patients (Hematol Oncol. 2018;36:252-257). However, the prognostic impact of ACA after allogeneic stem cell transplant (allo-SCT) has not been elucidated in adult AML patients. Patients and methods: Of the 145 adult AML patients who underwent the first allo-SCT in CR2 between 1997 and 2019, 98 patients whose cytogenetic abnormality data both at diagnosis and at the first relapse were available were included in this study. Cytogenetic changes between at diagnosis and the first relapse were classified into four groups: (1) no change, (2) ACA was acquired at the first relapse, (3) cytogenetic abnormalities observed at diagnosis were reduced or had disappeared at the first relapse, and (4) cytogenetic abnormalities observed at diagnosis were reduced or had disappeared, and completely different ACA was acquired at the first relapse. In this study, groups 2 and 4 were defined as ACA acquisition. Overall survival (OS) was defined as the interval from the date of transplant to the date of death. Fisher's exact test was used to compare binary variables. The cumulative incidence (CI) of non-relapse mortality (NRM) and relapse were evaluated with Gray's test, considering relapse and NRM as a competing risk, respectively. OS was estimated with the Kaplan-Meier method and compared using the log-rank test. Factors associated with at least borderline significance (p < 0.20) in univariate analyses were subjected to multivariate analysis. The Cox and Fine-Gray proportional hazard model were used for multivariate analysis of prognostic and risk factors, respectively. Values of p < 0.05 were considered to indicate statistical significance. Results: Of the 98 patients included in this study, 57 were male, and 41 were female. The median age at transplant was 45 years (range, 17-71 years). The median duration of CR1 was 12.4 months (range, 1.3-70.3 months) and cytogenetic risk groups were good, intermediate, and poor in 26 (27%), 70 (71%), and two patients (2%), respectively. Donor types were related, unrelated, and cord blood in 23 (24%), 59 (60%), and 16 patients (16%), respectively, and 86 (87%) and 61 patients (62%) were conditioned with myeloablative and total body irradiation-containing regimens, respectively. According to the definition described above, 20 patients (20%) acquired ACA at the first relapse. There was no significant difference in baseline characteristics and transplant procedures between patients with and without ACA acquisition. The OS rates were not significantly different between two groups (55% vs. 72% at three years after transplant; p = 0.28). The CI of relapse was significantly higher in patients with ACA acquisition than those without ACA acquisition (59% vs. 15%; p < 0.01), while the CI of NRM were not significantly different between two groups (5% vs. 19%; p = 0.17). Multivariate analysis for OS revealed that age over 50 years (hazard ratio [HR] = 2.4; p < 0.01), but not ACA acquisition, was identified as an independent prognostic factor. ACA acquisition (HR = 4.7; p < 0.01) was extracted as an independent risk factor of relapse, while use of reduced intensity conditioning regimens (HR = 3.1; p = 0.03) and more than or equal to 1 of performance status at transplant (HR = 2.7; p = 0.04) showed independent risks of NRM. The similar OS rates between two groups might resulted from an offset of the lower relapse rate with the higher NRM rate in patients without ACA acquisition despite not reaching statistical significance. This increasing NRM rates in those without ACA acquisition was potentially associated with use of reduced intensity conditioning regimens in larger proportion (0% vs. 15%; p = 0.12). Conclusion: These findings suggested that ACA acquisition at the first relapse was associated with a higher risk of relapse even after allo-SCT in CR2 in adult AML patients. As AML cells with ACA acquisition was resistant to not only chemotherapy but also graft-versus-leukemia effect, innovative therapeutic strategy is warranted. Disclosures Handa: Janssen: Honoraria; Kyowa Kirin: Research Funding; Takeda: Honoraria, Research Funding; BMS: Honoraria; Chugai: Research Funding; Ono: Honoraria; Sanofi: Honoraria, Research Funding; Abbvie: Honoraria; MSD: Research Funding; Shionogi: Research Funding; Celgene: Honoraria, Research Funding; Daiichi Sankyo: Research Funding.

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Prognostic Impact of Monosomal Karyotype in Patients with Myelodysplastic Syndrome and Abnormal Karyotype. A Report From the Spanish Group of MDS (GESMD)

Blood ◽

10.1182/blood.v118.21.1724.1724 ◽

2011 ◽

Vol 118 (21) ◽

pp. 1724-1724 ◽

Cited By ~ 1

Author(s):

David Valcárcel ◽

Vera Adema ◽

Mar Mallo ◽

Margarita Ortega ◽

Benet Nomdedeu ◽

...

Keyword(s):

Bone Marrow ◽

Multivariate Analysis ◽

Risk Factor ◽

Platelet Count ◽

Statistical Significance ◽

Refractory Anemia ◽

Prognostic Impact ◽

Abnormal Karyotype ◽

Monosomal Karyotype

Abstract Abstract 1724 Cytogenetic abnormalities (CA) are the most important prognostic factor in patients with myelodysplastic syndromes (MDS). Monosomal karyotype (MK) defined as the presence of at least two autosomal monosomies or one monosomy plus other structural CA, has been associated with poor prognosis in acute myeloid leukemia (AML) but its significance in MDS remains unclear. The aim of our study was to analyze the prognostic impact of MK in adult patients with MDS and CA. Patients from Spanish Registry of MDS diagnosed with MDS by WHO 2008 criteria and with CA detected by conventional cytogenetics have been included in the study. Statistical analysis consisted of Kaplan-Meyer univariate analysis (UA) including all known variables associated with prognosis in MDS and a Cox-regression multivariate analysis (MA) in which we included only those variables with a P<0.1 in UA. There were 1054 patients, 478 (45.3%) women. The median age was 71 (range 16–96) years. Median follow-up for survivors was 24.1 (range 0–210) months. There were 609 (57,8%) refractory anemia (RA) and 445 (42.8%) refractory anemia with excess of blasts (RAEB). The IPSS was low, intermediate-1, intermediate-2 and high in 18.3%, 39.3%, 25%, and 10.6%, respectively (6.7% were unclassifiables). Complex karyotype (CK) and MK was observed in 203 (19.3%) and 172 (16.3%) patients, respectively. Patients with MK showed worse prognostic characteristics than those without MK: More Intermediate-2 and high risk patients (50% vs. 20% and 30% vs. 6.7%; P<0.001); more frequent CK: (87.2% vs. 6%; P<0.001), higher median bone marrow (BM) blast count (7% vs. 3%; P<0.001) and lower hemoglobin (Hb) level (89 vs. 96 g/L; P<0.001). Median OS for the whole group was 32.7 months. In the UA, the variables associated with lower OS were: Male sex, RAEB subtype (vs. RA), higher IPSS, CK, MK, older age, higher peripheral blood (PB) and bone marrow (BM) blast percentage and lower Hb, platelets and neutrophil count. In the MA the variables associated with lower OS were: Age>60 years (HR 1.7; P<0.001), CK (HR 2.19; P<0.001), higher BM blast (HR 1.07; P<0.001), Hb<100 g/L (HR 1.788; P<0.001) and platelet count <100×109/L (HR 1.62; p<0.001). MK did not reach statistical significance in the MA (HR 1.45; P=0.059). In the group of patients with CK the UA showed that the presence of MK was associated with a trend to lower OS (Log rank 2.8, P=0.092) while the presence of ≥4 vs. 3 CA was associated with lower OS (Log rank 7.5; P=0.006). Other variables associated with lower OS in UA in this subset of patients were: RAEB (vs RA), presence of abnormalities of 5 and/or 7 chromosome, higher IPSS group, older age, higher BM blast percentage, and lower Hb and platelet count. In MA the variables associated with lower OS in patients with CK were: age>60 years (HR 1.734, P=0.008), RAEB vs. RA (HR 1.542, P=0.02) Hb <100 g/L (HR 2.1, P<0.001) platelets <100×109/L (HR1.886; P=001) and the presence of abnormalities of both 5 and 7 chromosomes (HR 2.058; P=0.001). The presence of MK did not reach statistical significance in the MA. At last follow-up, 221(21%) patients had shown AML evolution at a median of 9 months (0–125 months) for a 1 and 4 years probability of AML evolution of 14.2% (95% CI 11.8–16.6) and 28.6% (95 CI: 24.8–32.4). The variables associated with higher risk of AML evolution in the UA were: RAEB, higher IPSS, CK, MK, higher PB and BM blast percentage and lower hemoglobin, platelet and neutrophil count. In multivariate analysis the only variables that retained statistical significance were BM blasts (HR 1.13; P<0.001) and CK (HR 3.2; P<0.001). In conclusion, our study shows that the presence of MK is highly associated with CK and other high-risk features of MDS. In our population, the MK was not an independent risk factor for OS while the presence of CK was the main risk factor associated with poorer OS in MDS patients with abnormal karyotype. Disclosures: No relevant conflicts of interest to declare.

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Prognostic Impact of Cytogenetic Abnormalities in Adult Patients with Philadelphia-Chromosome (Ph)-Negative Acute Lymphoblastic Leukemia (ALL) Who Underwent Allogeneic Stem Cell Transplant (allo-SCT)

Blood ◽

10.1182/blood.v126.23.2024.2024 ◽

2015 ◽

Vol 126 (23) ◽

pp. 2024-2024

Author(s):

Hiroaki Shimizu ◽

Takayuki Saitoh ◽

Shinichiro Okamoto ◽

Yoshinobu Kanda ◽

Heiwa Kanamori ◽

...

Keyword(s):

Multivariate Analysis ◽

Prognostic Factor ◽

Complete Remission ◽

Research Funding ◽

Pharmaceutical Research ◽

Patient Characteristics ◽

Prognostic Impact ◽

Cell Transplant ◽

Cytogenetic Abnormalities ◽

Significant Difference

Abstract Background: Cytogenetic abnormalities at diagnosis are recognized as a potent prognostic factor for acute leukemia patients. Among acute myeloid leukemia patients, the prognostic implications of cytogenetic abnormalities have been established for those treated with chemotherapy as well as those undergoing allo-SCT. In the context of Ph-negative ALLpatients, cytogenetic abnormalities at diagnosis clearly stratify the prognosis, whereas it has not been elucidated whether similar prognostic stratification is applicable to allo-SCT recipients. Objective: The aim of this retrospective study was to assess the prognostic impact of cytogenetic abnormalities in adult Ph-negative ALL patients who underwent allo-SCT. Patients and Methods: The study cohort included 373 adult Ph-negative ALL patients aged over 15 years who underwent allo-SCT for the first time between January 2001 and December 2012 at the 23 institutions participating in the Kanto Study Group for Cell Therapy (KSGCT). Patients' clinical data were collected from the KSGCT database. The Institutional Review Board of Gunma University approved the protocol of this study. Karyotypes considered high risk (HR) included t(4;11), t(8;14), low hypodiploidy, and complex (equal or more than five abnormalities), and all other karyotypes were designated standard risk (SR). On this basis, 308 patients (82.6%) were categorized as SR and 65 patients (17.4%) were categorized as HR at diagnosis. Of the 373 patients, 267 underwent allo-SCT in complete remission (CR) (224 in the SR group and 43 in HR group), and 106 in non-CR (84 in the SR group and 22 in HR group). For analysis, the study population was stratified based on disease status at the time of transplant. Almost all patients were conditioned with total body irradiation (TBI)-containing myeloablative conditioning (MAC) regimens prior to transplantation. Overall survival (OS) was defined as the interval from the date of transplantation to the date of death. Non-relapse mortality (NRM) was defined as any death in continuous complete remission (CR). The Fisher's exact test was used for comparison of binary variables. OS and RFS were estimated by the Kaplan-Meier method, and compared using the log-rank test. Cumulative incidences (CI) of relapse and NRM were compared using the stratified Gray test. P < 0.05 was considered as statistically significant. Results: [Patients in CR] No significant difference in patient characteristics and transplant procedures was observed between the SR and HR groups. The 5-year OS rates were similar between the SR and HR groups (60.5% vs. 74.1%, respectively; p = 0.225) (Figure 1). Similarly, there were no significant differences in the 5-year CI of relapse and NRM rates between the two groups (relapse: 26.3% vs. 24.8%, respectively; p = 0.498, NRM: 19.6% vs. 10.0%, respectively; p = 0.232). Multivariate analysis for OS identified MAC and TBI-containing regimens, not cytogenetic risk, as significant positive prognostic factors. [Patients in non-CR] No significant difference was observed between the SR and HR groups in terms of patient characteristics or transplant procedures, although there was a female predominance in the HR group. Patients in the SR group had a significantly superior 5-year OS rate compared to the HR group (15.4% vs. 4.5%, respectively; p = 0.022). There was no significant difference in the 5-year CI of relapse between the SR and HR groups (60.3% vs. 50.0%, respectively; p = 0.411), whereas the 5-year CI of NRM in the SR group was significantly lower than that in the HR group (24.8% vs. 45.5%, respectively; p = 0.024). Multivariate analysis revealed cytogenetic risk group as an independent prognostic factor. Conclusion: These findings suggest that adult Ph-negative ALL patients in remission with HR cytogenetic abnormalities have similar transplant outcomes to those in the SR group. Considering the reported equality of the CR rates between the two groups, allo-SCT at an early clinical phase is recommended for HR group patients, reminiscent of Ph-positive ALL patients in the pre-imatinib era. Current transplant procedures do not improve outcomes for patients who are not in remission, especially those with HR cytogenetic abnormalities. Disclosures Usuki: MSD: Other: personal fees, Research Funding; SymBio Pharmaceutical: Other: personal fees, Research Funding; GlaxoSmithKline: Other: personal fees, Research Funding; Shionogi: Other: personal fees; Fujimoto Pharmaceutical: Research Funding; Bristol-Myers Squibb: Other; Takeda Pharmaceutical: Research Funding; Nippon Shinyaku: Other: personal fees, Research Funding; Sanofi: Other: personal fees, Research Funding; Shire: Research Funding; Kyowa Hakko Kirin: Other: personal fees, Research Funding; Otsuka Pharmaceutical: Research Funding; Eisai: Research Funding; Novartis: Other: personal fees, Research Funding; Boehringer Ingelheim: Other: personal fees, Research Funding; Celgene: Other: personal fees, Research Funding; Sumitomo Dainippon Pharma: Other: personal fees, Research Funding; Chugai Pharmaceutical: Other: personal fees; Fuji Film RI Pharma: Other: personal fees; Taiho Pharmaceutical: Other: personal fees, Research Funding; Astellas: Research Funding. Nakaseko:Novartis: Honoraria, Research Funding, Speakers Bureau; BMS: Honoraria, Research Funding, Speakers Bureau; Pfizer: Honoraria, Research Funding, Speakers Bureau; Otsuka: Honoraria, Research Funding.

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Clinical Significance of Additional Cytogenetic Abnormalities (ACA) at Disease Progression in Patients with High-Risk Myelodysplastic Syndrome (MDS) Treated with Azacitidine

Blood ◽

10.1182/blood-2019-127956 ◽

2019 ◽

Vol 134 (Supplement_1) ◽

pp. 5434-5434

Author(s):

Chiaki Naito ◽

Hiroaki Shimizu ◽

Yuri Miyazawa ◽

Takuma Ishizaki ◽

Akihiko Yokohama ◽

...

Keyword(s):

Multivariate Analysis ◽

Prognostic Factors ◽

High Risk ◽

Disease Progression ◽

Lymphoblastic Leukemia ◽

Univariate Analysis ◽

Philadelphia Chromosome ◽

Complex Karyotype ◽

Cytogenetic Abnormalities ◽

Cytogenetic Changes

Background: Although cytogenetic abnormalities at diagnosis are recognized as one of the most important prognostic factors in MDS patients, their cytogenetic findings are not stable and ACA are sometimes acquired in their clinical courses. We recently described that ACA acquisition at relapse was found in 40% and associated with the lower second complete remission (CR) rate and the inferior overall survival (OS) rate in adult patients with acute myeloid leukemia (AML) and Philadelphia chromosome-negative acute lymphoblastic leukemia (Ph-negative ALL). However, this clinical impact of ACA acquisition has not been elucidated in high-risk MDS patients during azacitidine treatment. So, we conducted this retrospective study to address this unsolved issue. Patients and methods: Of the 63 patients who were diagnosed as high-risk MDS according to French-American-British classification and were treated with azacitidine between 2012 and 2019, 34 whose cytogenetic data both at diagnosis and disease progression were available were included in this study. Treatment response to azacitidine was evaluated based on international working group response criteria for myelodysplasia. Cytogenetic changes between the time of diagnosis and disease progression were classified into four groups: (1) no change, (2) ACA was acquired at time of disease progression, (3) cytogenetic abnormalities observed at diagnosis were reduced or had disappeared at the time of disease progression, and (4) cytogenetic abnormalities observed at diagnosis were reduced or had disappeared, and completely different ACA was acquired at the time of disease progression. In this study, groups 2 and 4 were defined as those with ACA acquisition. OS was defined as the interval from the date of disease progression to the date of death. Fisher's exact test was used to compare binary variables. OS was estimated with the Kaplan-Meier method and compared using the log-rank test. The Cox proportional hazard model was used for multivariate analysis of prognostic factors. The potential factors evaluated in this analysis were age, gender, blast count in bone marrow (< or => 10%), karyotype (complex or not), revised international prognostic scoring sysytem (high/high-intermediate or not), and response to azacitidine (CR/partial remission or not). Values of p < 0.05 were considered to indicate statistical significance. Results: Of the 34 patients included in this study, 25 were male and 9 were female, and the median age was 66 years (range, 38-78 years). According to the definition described above regarding cytogenetic changes between the time of diagnosis and disease progression, 11 (32%), 14 (41%), 0 (0%), and 9 (26%) patients were categorized into group 1, 2, 3, and 4, respectively; thus, 23 patients (67%) acquired ACA at disease progression with a higher incidence in comparison with that of AML and Ph-negative ALL patients. In univariate analysis, only complex karyotype at treatment initiation was extracted as a significant predisposing factor for ACA acquisition at disease progression (100% vs. 47.6%, respectively; p = 0.002). Among 14 patients (nine and five in patients with and without ACA acquisition, respectively) received chemotherapy after disease progression, only two (14.3%) achieved CR (one and one, respectively). Although the OS rates after disease progression were not significantly different between patients with and without ACA acquisition (19.3% vs. 32.0% at one year, respectively; p = 0.256), in multivariate analysis, only ACA acquisition was identified as a negative prognostic factor of OS after disease progression (hazard ratio: 3.21, p = 0.043). Conclusion: These findings suggested that ACA acquisition at disease progression is frequently observed in high-risk MDS patients treated with azacitidine, especially in those harboring complex karyotype, and is associated with poor prognosis even after azacitidine failure, just like AML and Ph-negative ALL. As clinical impacts of ACA acquisition are common among multiple hematologic malignancies, to clarify the biological basis of ACA acquisition might contribute to the development of novel therapeutic strategies. Disclosures Handa: Ono: Research Funding.

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Cytogenetic Abnormalities May Predict Transformation to Acute Myeloid Leukemia in Polycythemia Vera Patients

Blood ◽

10.1182/blood.v128.22.4258.4258 ◽

2016 ◽

Vol 128 (22) ◽

pp. 4258-4258 ◽

Cited By ~ 1

Author(s):

Juliana E Hidalgo López ◽

Adrián A Carballo-Zarate ◽

L. Jeffrey Medeiros ◽

Carlos E Bueso-Ramos ◽

Guilin Tang

Keyword(s):

Bone Marrow ◽

Myeloid Leukemia ◽

Clonal Evolution ◽

Chronic Phase ◽

Complex Karyotype ◽

Abnormal Karyotype ◽

Cytogenetic Abnormalities ◽

Group A ◽

Group B

Abstract Introduction: Cytogenetic abnormalities can be detected in about 20% of patients with polycythemia vera (PV) at initial diagnosis. The accumulated risk for acute myeloid leukemia (AML) transformation from PV has been estimated to be 2.3-14.4% at 10 years. Risk factors for AML transformation suggested in other studies include older age, abnormal karyotype and high leukocyte count. The purpose of this study is to evaluate the association of cytogenetic abnormalities with AML transformation in PV. Methods: We searched the database at our institution for patients with a diagnosis of PV during Jan. 1994 to Apr. 2015. Demographic data, clinical presentations and follow-up, and laboratory data including karyotype before and after AML transformation were collected. Bone marrow morphology, especially evidence of myelodysplasia, myelofibrosis and blast percentage were evaluated. Results: A total of 317 patients with a diagnosis of PV were identified. 36 (11%) patients progressed to AML (Group A), including 15 who presented in chronic phase and 21 in blast phase. The median interval from the diagnosis of PV to AML transformation was 97 months (range, 11 - 331 months). For comparison, 50 patients with similar demographic features during the same time interval but no evidence of AML transformation were also included in the study (Group B). The age of patients in both groups was comparable (median age: 57 vs. 54 years, p=0.2791). All patients were positive for JAK2 V617F mutation. The main therapies for patients with chronic phase PV included phlebotomy, hydrea, and tyrosine kinase inhibitors in a small subset of patients. There was no significant difference of treatments among the patients in groups A and B. Karyotype at chronic phase of PV was available in 15 patients in Group A and all 50 patients in Group B. Eleven (73%) patients in Group A showed an abnormal karyotype in chronic phase. The most common chromosomal abnormalities were trisomy 1q (n=6, 40%), including 4 (27%) patients with [+1, der(1;7)(q10;p10)] resulting in trisomy 1q and del(7q); and complex karyotype (n=3, 20%). Del(20q) and +8 was uncommon, only detected in 1 patient each. In Group B, 11 (22%) patients had an abnormal karyotype, which was much less frequent compared with Group A. No patients in Group B showed a complex karyotype or trisomy 1q; instead, del(20q) (n=6, 55%), +9 and/or +8 (n=5, 45%) were the most common chromosomes abnormalities detected. The median follow-up was 10 years in Group A and 14.5 years in Group B. At the time of AML transformation, 35 (97%) patients in Group A showed an abnormal karyotype, including 21 (58%) patients with a complex karyotype, 22 patients with -5/del(5q) and/or -7/del(7q) and 10 (28%) with trisomy 1q [8 with +1, der(1;7)]. Among the 15 patients who had karyotypic information during the chronic phase, 4 (27%) patients showed clonal evolution and 7 (47%) acquired new unrelated abnormal clones when AML transformation occurred. Morphologically, 15 patients in Group A had sequential bone marrow evaluation from chronic phase to blast phase, 14 (93%) patients developed myelofibrosis and 7 (47%) patients showed multilineage dysplasia during the chronic phase. At the time of AML transformation, 35 (97%) patients showed myelodysplasia. In Group B, 5 (10%) patients developed myelodysplasia and 31(62%) developed myelofibrosis in follow-up bone marrow samples. Conclusion: Cytogenetic abnormalities are associated with AML transformation in PV patients. Patients with an abnormal karyotype, especially with abnormalities of trisomy 1q [+1,der(1;7)(q10;p10)] or a complex karyotype, are at highest risk to develop clonal evolution or acquire new myelodysplasia-related clones [like -5/del(5q) and/or -7/del(7q)] or develop myelodysplasia and transform into AML. On the other hand, cytogenetic abnormalities, such as del(20q), +8 and/or +9, although commonly detected in PV, are associated with a low risk for myelodysplasia and AML transformation. Surveillance for cytogenetic abnormalities is helpful in the risk assessment of AML transformation in PV patients. Disclosures No relevant conflicts of interest to declare.

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Cytogenetic Clonal Evolution in Myeloproliferative Neoplasms: Contexts and Prognostic Impact Among 650 Patients with Serial Bone Marrow Biopsies

Blood ◽

10.1182/blood-2018-99-109714 ◽

2018 ◽

Vol 132 (Supplement 1) ◽

pp. 4291-4291

Author(s):

Maura Nicolosi ◽

Domenico Penna ◽

Mythri Mudireddy ◽

Natasha Szuber ◽

Rangit Vallapureddy ◽

...

Keyword(s):

Bone Marrow ◽

Mayo Clinic ◽

Myeloproliferative Neoplasms ◽

Clonal Evolution ◽

World Health ◽

Prognostic Impact ◽

Abnormal Karyotype ◽

Bone Marrow Biopsies ◽

Cytogenetic Abnormalities ◽

Overt Disease

Abstract Background : Cytogenetic abnormalities occur in approximately a third of patients with primary myelofibrosis (PMF) and 5-20% of those with essential thrombocythemia (ET) or polycythemia vera (PV). Abnormal karyotype in PV and specific cytogenetic abnormalities in PMF have been shown to adversely affect survival (Leukemia. 2018;32:1189; Br J Haematol. 2017 Jun 9. doi: 10.1111/bjh.14798). In the current retrospective study, we considered 650 Mayo Clinic patients with myeloproliferative neoplasms (MPN), including ET, PV and PMF, with at least two documented bone marrow (BM) biopsies, in order to examine the incidence and pattern of changes in karyotype and their clinical correlates. Methods : Study patients were recruited from the Mayo Clinic, Rochester, MN, USA, based on documentation of at least two serial BM biopsies. Diagnoses were according to the 2016 World Health Organization criteria (Blood. 2016;127:2391). BM biopsy #1 referred to the baseline karyotype at time of initial diagnosis/referral and BM biopsy #2 to the first repeat BM biopsy after diagnosis. In addition to documenting the presence or absence of changes in karyotype, a notation was made regarding disease phase, at the time of the repeat biopsy, in order to allow accurate interpretation of the data and evaluation of survival impact. Results: 650 patients with MPN, including 153 ET, 105 PV and 392 PMF, were included in the current study and had undergone at least two BM biopsies; 227 patients had three, 108 four, 48 five, 19 six, and 4 seven repeat BM biopsies during their clinical course. Cytogenetic clonal evolution in patients with normal karyotype at baseline : Baseline karyotype was normal in 466 (72%) patients, including 139 (91%) ET, 91 (87%) PV and 236 (60%) PMF. Clonal evolution, which constituted a change from "normal" to "abnormal" karyotype, was documented in 16 (12%) patients with ET, 22 (24%) with PV and 75 (33%) with PMF; the latter included favorable karyotype in 11% of the cases, unfavorable in 12% and very high risk (VHR) in 10%. 11 (69%) of the 16 documented cases of clonal evolution in ET, 10 (45%) of 22 in PV and 11 (15%) of 75 in PMF were accompanied by clinically evident progression to blast or fibrotic phase disease, at the time of the repeat BM biopsy. Cytogenetic clonal evolution in patients with abnormal karyotype at baseline : Baseline karyotype was abnormal in 187 (28%) patients, including 17 (9%) ET, 14 (13%) PV and 156 (40%) PMF. Additional changes in karyotype, during serial BM biopsies, were documented in 6 (35%) ET, 5 (36%) PV and 71 (46%) PMF patients. In PMF, the pattern of changes in karyotype included "favorable" to "favorable" in 7%; "favorable" to "unfavorable" in 13%; "favorable" to "VHR" in 5%; "unfavorable" to "unfavorable" in 13%; "unfavorable" to "VHR" in 3%; and "VHR" to "VHR" in 6%. All 11 (100%) patients with ET or PV who underwent clonal evolution displayed clinically overt disease transformation into leukemic or fibrotic phase disease, at the time of the repeat BM biopsy. Leukemic transformation at the time of the repeat BM biopsy was evident in 13 (18%) of the 71 PMF cases with clonal evolution. Survival impact of cytogenetic clonal evolution without change in disease phase : The survival impact of cytogenetic clonal evolution was examined under the following provisions: i) analysis was limited to events occurring at BM biopsy #2 with survival calculated from the date of BM biopsy #2; ii) patients with leukemic or fibrotic transformation at time of BM biopsy #2 were excluded from analysis; and iii) clonal evolution for the purposes of survival analysis constituted changes from "normal" to "abnormal", for ET and PV, while the type of changes were taken under consideration for PMF. Under these stipulations, clonal evolution appeared to affect survival in general, although statistical significance was apparent for only ET and PMF (Figures 1a, 1b and 1c). Conclusions: Cytogenetic clonal evolution in ET and PV is infrequent, in the absence of clinically overt disease transformation, and is more likely to occur in PMF. Such events, when documented in chronic phase disease, appeared to predict shortened survival in all three MPNs, which was most apparent in ET and with emergence of VHR or unfavorable abnormalities in PMF. These observations warrant prospective studies that account for indication bias. Disclosures No relevant conflicts of interest to declare.

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Impact of Cytogenetic Abnormalities and Cytogenetic Response to Hypomethylating Agents (HMAs) in Patients (pts) with Lower Risk Myelodysplastic Syndromes (MDS)

Blood ◽

10.1182/blood.v126.23.2877.2877 ◽

2015 ◽

Vol 126 (23) ◽

pp. 2877-2877 ◽

Cited By ~ 1

Author(s):

Guillermo Montalban-Bravo ◽

Guillermo Garcia-Manero ◽

Nicholas J. Short ◽

Koji Sasaki ◽

Mikkael A. Sekeres ◽

...

Keyword(s):

Board Of Directors ◽

Lower Risk ◽

Research Funding ◽

Risk Model ◽

Clonal Evolution ◽

Cytogenetic Response ◽

Low Risk ◽

Abnormal Karyotype ◽

Advisory Committees ◽

Cytogenetic Abnormalities

Abstract Introduction: Although pts with lower risk MDS have longer OS and transformation free survival than pts with higher risk disease, a subset of pts with lower risk MDS have higher risk cytogenetics. There is scarce data on the impact of cytogenetic abnormalities on response to HMAs in this patient population, the ability of these agents to induce cytogenetic responses along with the prognostic relevance of clonal evolution in this subset of pts. Methods: Pts with lower risk MDS treated with HMAs between 2012 and 2015 were evaluated. Information regarding baseline cytopenias, prior malignancy or chemotherapy, initial and on therapy bone marrow cytogenetic findings and response to therapy by IWG criteria were collected. Pts were stratified according to IPSS/IPSS-R cytogenetic groups and MDACC Lower risk model. Data regarding time to cytogenetic response, clonal evolution and clinical evolution was also reviewed. Statistical analysis included Chi-squared for categorical variables, T-student for continuous variables and Kaplan-Meier for OS and EFS. Results: A total of 83 pts were evaluated. Pt characteristics are in Table 1. Overall response rate was 61% with 39% CR, 10% CRn, 2% CRp, 1% CRi and 10% pts showing hematological improvement only. No significant difference in response rates (68% vs 61%, p=0.51) to HMAs was observed between pts with or without cytogenetic abnormalities. In pts with abnormal karyotype, 10 (26%) had complete cytogenetic response (CCyR) and 12 (31%) had partial cytogenetic response (PCyR) after a median of 7 months of therapy (range 2-18). Clonal evolution during therapy was observed in 12 (14%) pts after a median time of 8 months, and was associated with loss of response in 6 (50%) pts. There was no correlation between the achievement of a CR and cytogenetic response (p=0.36).The median follow-up was 13 months (2-30 months). Stratification of pts by IPSS or IPSS-R cytogenetic scores did not significantly predict differences for EFS (p=0.31 and p=0.47) nor OS (p=0,52 and p=0.18). By applying the MDACC low-risk scoring system, the 13-month survival rate was 100%, 83%, and 73%, for pts with categories 1, 2, and 3 respectively (p=0.35). No differences in EFS were observed between these groups. The 1-year EFS and OS rates were 79% vs 24% (p<0.001), and 83% vs 67% (p=0.3) for pts with and without any response (Figure 1). Pts achieving CR had 1-year EFS and OS rates of 83% and 92%, respectively. The 1-year EFS and OS rates were 89% vs 50% (p=0.26) and 77% vs 74% (p=0.84), for pts with or without a cytogenetic response. Among pts with morphologic CR, achieving a cytogenetic response did not confer a significant benefit in EFS (100% vs 75%; p=0.69) or OS (88% vs 75%, p=0.91). Acquisition of clonal evolution did not significantly impact EFS (56% vs 31%; p=0.37) nor OS (59% vs 57%, p=0,5). Presence of complex cytogenetics was associated with a trend for a shorter OS (67% vs 80%, p=0,072) and EFS (42% vs 66%, p=0.36). Conclusions: Achieving response to HMA therapy in pts with low-risk MDS is associated with improvement of outcome. Current IPSS or IPSS-R cytogenetic scores do not predict for outcome with HMA therapy. MDACC Lower risk model showed a tendency to better stratify OS of pts with low risk MDS treated with HMA. Cytogenetic evolution does not appear to impact outcome in patient with low-risk MDS treated with HMAs. Table 1. Studied factor Normal Karyotype Abnormal Karyotype Age 68 (44-85) 72 (55-84) SexMaleFemale 33 (70%)14 (30%) 21 (58%)15 (42%) IPSS CategoryLowIntermediate-1 10 (21%)37 (79%) 3 (8%)33 (92%) MDACC Lower risk modelLow (category 1)Intermediate (category 2)High (category 3) 6 (13%)25 (53%)16 (34%) 1 (3%)13 (36%)22 (61%) Mean blood counts at baselineHemoglobinPlateletsWBCANC 10.2g/dL (7.3-14.4)103 x109/L (4-404)6.8 x109/L (0.7-35.2)4.5 x109/L (0.2-23-2) 10.5 g/dL (7.8-15.5)96.x109/L (7-325)5.6 x109/L (1.2-32.2)2.7 x109/L (0.2-16.9) Number of clones at baseline 1 2 (1-4) Baseline % of blasts 5 (0-10) 2 (0-8) Baseline Cytogenetic abnormalities-Ydel(20q)del(11q)del(5q)del(7q) or -7+8OtherComplex Cytogenetics - 2 (6%)2 (6%)2 (6%)5 (14%)5 (14%)6 (17%)14 (39%)6 (17%) Cytogenetics at baseline by IPSSGoodIntermediatePoor 47 (100%) 8 (22%)20 (56%)8 (22%) Cytogenetics at baseline by IPSS-RVery goodGoodIntermediatePoorVery poor 47 (100%) 3 (8%)7 (19%)18 (50%)3 (8%)5 (14%) Prior malignancy 19 (40%) 13 (36%) Therapy related 7 (15%) 9 (25%) Number of Cycles of HMA 9 (2-25) 11 (2-29) Figure 1. Figure 1. Disclosures Sekeres: Celgene Corporation: Membership on an entity's Board of Directors or advisory committees; Amgen: Membership on an entity's Board of Directors or advisory committees; TetraLogic: Membership on an entity's Board of Directors or advisory committees. Komrokji:Incyte: Consultancy; Celgene: Consultancy, Research Funding; Novartis: Research Funding, Speakers Bureau; Pharmacylics: Speakers Bureau. Steensma:Celgene: Consultancy; Amgen: Consultancy; Incyte: Consultancy; Onconova: Consultancy. DiNardo:Novartis: Research Funding. Pemmaraju:Stemline: Research Funding; Incyte: Consultancy, Honoraria; Novartis: Consultancy, Honoraria, Research Funding; LFB: Consultancy, Honoraria. Daver:ImmunoGen: Other: clinical trial, Research Funding. Konopleva:Novartis: Research Funding; AbbVie: Research Funding; Stemline: Research Funding; Calithera: Research Funding; Threshold: Research Funding. Cortes:Teva: Research Funding; BMS: Consultancy, Research Funding; Novartis: Consultancy, Research Funding; BerGenBio AS: Research Funding; Pfizer: Consultancy, Research Funding; Ariad: Consultancy, Research Funding; Astellas: Consultancy, Research Funding; Ambit: Consultancy, Research Funding; Arog: Research Funding; Celator: Research Funding; Jenssen: Consultancy.

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Development and Analysis of a Weighed Prognostic Model in Newly Diagnosed Multiple Myeloma Patients

Blood ◽

10.1182/blood-2020-140464 ◽

2020 ◽

Vol 136 (Supplement 1) ◽

pp. 47-48

Author(s):

Xue-Han Mao ◽

Yan Xu ◽

Yuting Yan ◽

Jiahui Liu ◽

Huishou Fan ◽

...

Keyword(s):

Risk Factors ◽

Multiple Myeloma ◽

Multivariate Analysis ◽

Prognostic Factors ◽

High Risk ◽

Prognostic Factor ◽

Prognostic Model ◽

Cytogenetic Abnormalities ◽

Total Score Range ◽

Prognosis Model

Background and Objective: Multiple myeloma (MM) is characterized with significant cytogenetic changes and complex tumor microenvironment, thus patient survival is extremely heterogeneous. Various disease-related or patient-related factors affect the prognosis of patients. This study tried to analyze the prognostic indicators of patients with newly-treated MM, especially explored the prognosis of multiple cytogenetic abnormalities and the ratio of lymphocytes to monocytes (LMR). Additionally, we established a comprehensive prognostic model to help determine the patient prognosis. Methods: After screening, 603 patients of untreated MM from January 2008 to June 2017, with complete baseline indicators were enrolled into the study. By univariate and multivariate Cox analysis, risk factors related to the prognosis of patients were evaluated, and a weighted prognosis model was established to compare the survival differences of patients in each risk stratification. Result: Optimal thresholds of ALC, LWR, NLR and LMR were determined by ROC curve and Youdex index: ALC = 1.415, LWR = 0.325, NLR = 1.935, LMR = 2.95. Survival analysis showed that patients with LMR ≤ 2.95, ALC ≥ 1.415 and LWR ≥ 0.325 had significantly better survival compared with their respective control groups. Cox multivariate analysis showed that among the four indicators, only LMR≤2.95 was an independent adverse prognostic factor for overall survival (OS)(Figure 1A). 17p deletion, 1q21 amplification, t (4; 14) / t (14; 16) were define as high-risk cytogenetic abnormalities (HRA). Of the 603 patients, about 60% were associated with at least one high-risk cytogenetic event. Among them, the occurrence of cumulative 0, 1, 2, and 3 HRA were 39.6% (239/603), 42.5% (256/603), 16.6% (100/603), and 1.3% (8/603), respectively. There was no significant difference in survival among patients with same number of HRAs. The median OS of patients with 0, 1 and ≥ 2 HRA were not reached, 62.1 months (95% CI, 49.3-74.9) and 30.4 months (95% CI, 24.5-36.3), respectively (p <0.001)(Figure 1B).Final Cox regression model showed that age 65 ~ 74 (HR=1.77, 95%CI, 1.24-2.51, p=0.001), age ≥75 (HR=2.46, 95%CI, 1.69-3.58, p < 0.001), LDH≥247 U/L (HR =1.65, 95%CI, 1.07-2.51, p=0.023), ISS stage III (HR=1.76, 95%CI, 1.24-2.50, p=0.002), LMR≤2.95 (HR=1.53, 95%CI, 1.08-2.18, p=0.017), 1 HRA (HR=1.87, 95%CI, 1.27-2.75, p=0.002) and ≥2 HRA (HR=3.48, 95%CI, 2.22-5.45, p<0.001) are independent adverse prognostic factors for OS. Then weighted risk factors were summed to establish a comprehensive prognosis model, with a total score range of 0-6 points. Accordingly, the whole cohort was divided into low risk (0-1 points, 45.4%), intermediate risk (2 points, 27.9%), high risk (3 points, 19.2%) and ultra-high risk (4-6 points, 7.5 %) groups. The median OS of the four risk groups were 85.8 months (67.1-104.5), 49.0 months (44.7-53.3), 35.4 months (31.3-39.5), and 23.2 months (18.8-27.6), respectively (p<0.001). The C-statistics of this prognostic model is 0.68 (95% CI, 0.64-0.71), which is significantly better than the D-S stage (C-statistics = 0.52, 95% CI, 0.50-0.55, p <0.001), ISS (C-statistics = 0.60, 95% CI, 0.57-0.64, p <0.001) and R-ISS stage (C-statistics = 0.60, 95% CI, 0.57-0.63, p <0.001). Bootstrap resampling and calibration curve showed that the model has an accurate predictive effect on both short-term and long-term prognosis of patients(Figure 1C). Conclusion: In our analysis, ALC, LWR, LMR were associated with poor prognosis in NDMM patients, while NLR had no significant prognostic significance. Among the four indicators, LMR≤2.95 was the only independent prognostic factor. In NDMM patients, survival of patients with the same number of high-risk cytogenetic abnormalities were comparable with each other, regardless of whichever combination of HRA. Higher number of high-risk cytogenetic abnormalities were associated with worse prognosis. Cox multivariate analysis showed that, old age (65-74 years old, ≥75 years old), increased LDH (≥247 U/L), decreased LMR (≤2.95), ISS III, 1 HRA and ≥ 2 HRA were independent adverse prognostic factors that affect the OS of MM patients. 4. A comprehensive weighted prognostic model was established with the above factors, which was proved to effectively distinguish different prognosis of patients. Figure 1 Disclosures No relevant conflicts of interest to declare.

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CNS Invasion in Meningioma—How the Intraoperative Assessment Can Improve the Prognostic Evaluation of Tumor Recurrence

Cancers ◽

10.3390/cancers12123620 ◽

2020 ◽

Vol 12 (12) ◽

pp. 3620

Author(s):

Felix Behling ◽

Christina Fodi ◽

Irina Gepfner-Tuma ◽

Kathrin Machetanz ◽

Mirjam Renovanz ◽

...

Keyword(s):

Central Nervous System ◽

Nervous System ◽

Multivariate Analysis ◽

Tumor Recurrence ◽

Statistical Significance ◽

Prognostic Impact ◽

Central Nervous System Tissue ◽

Intraoperative Assessment ◽

Intraoperative Detection ◽

The Central Nervous System

The detection of the infiltrative growth of meningiomas into CNS tissue has been integrated into the WHO classification as a stand-alone marker for atypical meningioma. However, its prognostic impact has been questioned. Infiltrative growth can also be detected intraoperatively. The prognostic impact of the intraoperative detection of the central nervous system tissue invasion of meningiomas was analyzed and compared to the histopathological assessment. The clinical data of 1517 cases with follow-up data regarding radiographic recurrence was collected. Histopathology and operative reports were reviewed and invasive growth was seen during resection in 23.7% (n = 345) while histopathology detected it in 4.8% (n = 73). The histopathological and intraoperative assessments were compatible in 63%. The prognostic impact of histopathological and intraoperative assessment was significant in the univariate but not in the multivariate analysis. Both methods of assessment combined reached statistical significance in the multivariate analysis (p = 0.0409). A score including all independent prognostic factors divided the cohort into three prognostic subgroups with a risk of recurrence of 33.8, 64.7 and 88.5%, respectively. The intraoperative detection of the infiltrative growth of primary meningiomas into the central nervous system tissue can complement the histopathological assessment of CNS invasion. The combined assessment is an independent prognostic factor regarding tumor recurrence and allows a risk-adapted tumor stratification.

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