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  • American Society of Hematology  (29)
  • Medicine  (29)
  • 1
    In: Blood, American Society of Hematology, Vol. 134, No. Supplement_1 ( 2019-11-13), p. 2187-2187
    Abstract: Introduction Intravenous infusions and chemotherapy can be a stressful and emotionally-draining process. Prior studies have examined patient perceptions of care and how to improve patient experience during this time. Art interventions have been performed to enhance the patient experience and reduce negative side effects. This patient-centered study investigated the process by which two distinct art modalities - reflective writing and tile painting -- alleviated patients' symptom burden. Methods Chemotherapy patients at The Comprehensive Cancer Center at The Miriam Hospital (Providence, RI) were invited to participate in a therapeutic activity of their choice during their infusions - either painting a wooden tile or engaging in a reflective writing activity. The tile painting consisted of free-form painting with either acrylic paints or pastels. The reflective writing activity consisted of guided or personal reflections on a variety of predefined prompts. Patients completed the Edmonton Symptom Assessment System (ESAS) immediately before and immediately after engaging in their chosen activity, allowing a direct within-subjects comparison of associated symptomatology. Patients also completed a qualitative survey, which allowed them to expand upon their experience in their own words, write recommendations, and reflect upon the process. The activity and surveys were standardized to 30 minutes duration. After the post-activity survey, patients were allowed to continue writing or painting if they so desired. Patients were encouraged to keep the art materials and journal for further therapeutic benefit. Results Twenty-six participants were included in data analysis, with 9 choosing to journal and 17 choosing to paint. In the painting group, there was a significant reduction in the following ESAS measures: tiredness (p = 0.021), anxiety (p = 0.013), shortness of breath (p = 0.016), and a marked increase in feelings of well-being (p = 0.002). In the reflective writing group, there was a significant reduction in anxiety (p = 0.05). Conclusion Overall, both tile painting and reflective writing initiatives resulted in improved patient experience and sense of wellness. The tile painting activity led to a greater number of improved symptoms, whereas reflective writing led to a singular reduction in anxiety, illustrating perhaps the different mechanisms by which these activities foster healing. The tile painting may have served to distract the patient from the gravity of the current illness; its free-form nature allowed participants to be creative with pleasant imagery of their choice, and finishing a work of art perhaps elicited a sense of accomplishment. In comparison, reflective writing may have allowed patients to process their experience of living with their illness and delve deeply into emotional states, fostering a sense of resilience and introspection. Taken together, the specific mechanisms by which these activities provide solace may explain the differential nature of these contrasting yet ultimately beneficial therapies. Disclosures No relevant conflicts of interest to declare.
    Type of Medium: Online Resource
    ISSN: 0006-4971 , 1528-0020
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    Language: English
    Publisher: American Society of Hematology
    Publication Date: 2019
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  • 2
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    Online Resource
    American Society of Hematology ; 2016
    In:  Blood Vol. 128, No. 22 ( 2016-12-02), p. SCI-39-SCI-39
    In: Blood, American Society of Hematology, Vol. 128, No. 22 ( 2016-12-02), p. SCI-39-SCI-39
    Abstract: The processes of megakaryocyte differentiation, proplatelet formation, and the daily release of 1011 platelets into the bloodstream are tightly regulated. Genetic disturbances can lead to a cascade of downstream molecular alterations that markedly affect the function of megakaryocytes and platelets. Therefore, identifying new genes and their function in megakaryocytes and platelets is critical for understanding how these unique cells contribute to health and disease. Over the last decade advances in genomics, specifically next generation sequencing, have allowed for the discovery of several mutations and genetic variants that cause disease or influence associated hematological traits. By performing platelet RNA-Seq we were among the first to identify NBEAL2 as the causative gene for gray platelet syndrome (GPS) and showed that NBEAL2 regulates megakaryocyte development and platelet function.1-3 Mice carrying targeted Nbeal2 null alleles not only replicated the thrombocytopenia and lack of alpha granules observed in humans, but also provided new information about the role of platelets in thromboinflammation, wound healing, myelofibrosis and metastasis dissemination.4-7 More recently, we and others found that germline mutations in ETV6 lead to thrombocytopenia, red cell macrocytosis, and predisposition to lymphoblastic leukemia.8,9ETV6 encodes an ETS family transcriptional repressor, which exerts its activity by binding a consensus sequence in the promoter regions of DNA. Mice with conditional Etv6 knockout in megakaryocytic-erythroid cells are thrombocytopenic indicating the involvement of Etv6 in thrombopoiesis.10 Several of the families recently described have a missense mutation in the central domain of ETV6 (p.P214L). This mutation results in aberrant cellular localization of ETV6, decreased transcriptional repression, and impaired megakaryocyte maturation. The bone marrow of individuals affected by this mutation show hyperplasia of immature megakaryocytes suggesting a differentiation arrest. Deep sequencing of the platelet transcriptome also revealed significant differences in mRNA expression levels between patients with the ETV6 p.P214L mutation and non-affected family members, indicating that ETV6 is critically involved in defining the molecular phenotype and function of platelets. Consistent with this notion, individuals with the ETV6 p.P214L mutation experience bleeding that is disproportionate to their mild thrombocytopenia. We have also used CRISPR/Cas9 technology to generate a mouse colony where the human p.P214L ETV6 mutation was inserted into the conserved site of Etv6. Mice with this mutation (Etv6H.P214L) have reduced platelet counts. In summary, advances in human genetics that led to the discovery of novel congenital platelet disorders coupled with relevant animal models will likely contribute to our understanding of megakaryopoiesis and platelet function. References 1. Kahr WH, Hinckley J, Li L, et al. Mutations in NBEAL2, encoding a BEACH protein, cause gray platelet syndrome. Nature genetics. 2011;43(8):738-740. 2. Gunay-Aygun M, Falik-Zaccai TC, Vilboux T, et al. NBEAL2 is mutated in gray platelet syndrome and is required for biogenesis of platelet alpha-granules. Nature genetics. 2011;43(8):732-734. 3. Albers CA, Cvejic A, Favier R, et al. Exome sequencing identifies NBEAL2 as the causative gene for gray platelet syndrome. Nature genetics. 2011;43(8):735-737. 4. Deppermann C, Cherpokova D, Nurden P, et al. Gray platelet syndrome and defective thrombo-inflammation in Nbeal2-deficient mice. The Journal of clinical investigation. 2013. 5. Kahr WH, Lo RW, Li L, et al. Abnormal megakaryocyte development and platelet function in Nbeal2(-/-) mice. Blood. 2013;122(19):3349-3358. 6. Guerrero JA, Bennett C, van der Weyden L, et al. Gray platelet syndrome: proinflammatory megakaryocytes and alpha-granule loss cause myelofibrosis and confer metastasis resistance in mice. Blood.2014;124(24):3624-3635. 7. Tomberg K, Khoriaty R, Westrick RJ, et al. Spontaneous 8bp Deletion in Nbeal2 Recapitulates the Gray Platelet Syndrome in Mice. PLoS One. 2016;11(3):e0150852. 8. Noetzli L, Lo RW, Lee-Sherick AB, et al. Germline mutations in ETV6 are associated with thrombocytopenia, red cell macrocytosis and predisposition to lymphoblastic leukemia. Nature Genetics. 2015;47(5):535-538. 9. Zhang MY, Churpek JE, Keel SB, et al. Germline ETV6 mutations in familial thrombocytopenia and hematologic malignancy. Nature genetics. 2015;47(2):180-185. 10. Wang LC, Swat W, Fujiwara Y, et al. The TEL/ETV6 gene is required specifically for hematopoiesis in the bone marrow. Genes & development. 1998;12(15):2392-2402. Disclosures Di Paola: CSL BEhring: Consultancy; Biogen: Consultancy.
    Type of Medium: Online Resource
    ISSN: 0006-4971 , 1528-0020
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    Publisher: American Society of Hematology
    Publication Date: 2016
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  • 3
    Online Resource
    Online Resource
    American Society of Hematology ; 2020
    In:  Blood Vol. 136, No. Supplement 1 ( 2020-11-5), p. 35-36
    In: Blood, American Society of Hematology, Vol. 136, No. Supplement 1 ( 2020-11-5), p. 35-36
    Abstract: INTRODUCTION Adverse effects are common during treatment of hematological malignancies. Treatment toxicities can impact quality of life [1], impose financial hardship and cause cancer related distress[2] . Symptom monitoring using electronic technology can facilitate early detection of complications[3], reduce symptom burden[4] , cost of care[5] and improve survival[6] . Cancer treatment also increases risk of mortality from infections such as coronavirus disease 2019 (COVID-19) and routine screening has been recommended[7]. METHODS We developed an application that periodically delivers toxicity questionnaires to patients during treatment . Based on NCI- PRO-CTCAE™, the questions are delivered through SMS or e-mail. Patient responses crossing prespecified thresholds trigger automated alerts on a dashboard, resulting in additional interventions as needed. Nature and time to intervention is tracked. Patient experience is measured using a Likert-scale and free-text box. Centers for Disease Control recommended COVID-19 screening questions were incorporated. Finally, a distress thermometer for cancer distress screening has been recently added. The app was offered to patients with hematological cancers in a community-based cancer center. RESULTS Since introduction in April 2020, we have enrolled 37 patients. 9 patients had chronic lymphocytic leukemia, 6 diffuse large B cell, 5 mantle cell, 4 Hodgkin's and 3 follicular lymphoma. 2 each had chronic myelogenous, multiple myeloma and Richter's syndrome. 1 each had hairy cell leukemia, acute myelogenous leukemia and T Cell lymphoma. Median age was 64 years (range 24-85). Patient experience has been favorable. On a scale of 1-5, 85.5% rated the experience as 3 or higher. Median patient engagement, calculated by dividing the number of forms completions by number of days enrolled was 34.2% (0.9-66.2 %). Symptom tracker captured 536 responses. Fatigue (153), no symptoms (152), shortness of breath (57), nausea/vomiting, diarrhea (46) and numbness/tingling (28) were the most common response categories. Of 1107 completed check ins, 75 triggered flags. There were 2 hospitalizations for neutropenic fever with the remainder managed as outpatients. Average time between patient generated response and provider intervention was 90.9 minutes. 88% follow-ups were completed within 1 business day. COVID-19 screening module captured 1096 responses. 988 were no symptoms. All positive responses (44 diarrhea, 39 cough, 23 shortness of breath and 2 fever) were false positives. Distress thermometer implemented a week before data cut-off captured 2 responses, 1 in the physical and 1 in the psychological domain. CONCLUSION We demonstrate feasibility of electronic capture of treatment toxicities and offer proof of concept that a mobile app can be used for infection screening. Additionally, the quick response time by care team indicated a high adoption rate. REFERENCES Doorduijn J, B.I., Holt B, Steijaert M, Uyl-de Groot C, Sonneveld P., Self-reported quality of life in elderly patients with aggressive non-Hodgkin's lymphoma treated with CHOP chemotherapy. . European Journal of Hemtology 2005. 75(2): p. 116-123.Troy JD, L.S., Samsa GP, Feliciano J, Richhariya A, LeBlanc TW., Patient-reported distress in Hodgkin lymphoma across the survivorship continuum. Supportive Care Cancer, 2019. 27(7): p. 2453-2462.Stover A M, H.S., Deal A M, Stricker C T, Bennett A V, Carr P M, Jansen J, Kottschade L A, Dueck A C, Basch E M, Methods for alerting clinicians to concerning symptom questionnaire responses during cancer care: Approaches from two randomized trials (STAR, AFT-39 PRO-TECT). Journal of Clinical Oncology 2018. 36(30 supplement): p. 158.Mooney KH, B.S., Wong B, Whisenant M, Donaldson G, Automated home monitoring and management of patient-reported symptoms during chemotherapy: results of the symptom care at home RCT. Cancer Medicine, 2017. 6(3): p. 537-546.Barkley R, S.M.-J., Wang J, Blau S, Page RD, Reducing Cancer Costs Through Symptom Management and Triage Pathways. Journal of Oncology Practice, 2019. 15(2): p. e91-e97.Denis F, B.E., Septans AL, Urban T, Dueck AC, Letellier C., Two-Year Survival Comparing Web-Based Symptom Monitoring vs Routine Surveillance Following Treatment for Lung Cancer. JAMA, 2019. 321(3): p. 306-307.ASCO Special Report: A guide to cancer care delivery during COVID-19 pandemic. 2020, ASCO: Alexandria, VA. Disclosures Janssen: wellbe Inc.: Current Employment.
    Type of Medium: Online Resource
    ISSN: 0006-4971 , 1528-0020
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    Language: English
    Publisher: American Society of Hematology
    Publication Date: 2020
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  • 4
    Online Resource
    Online Resource
    American Society of Hematology ; 2005
    In:  Blood Vol. 106, No. 11 ( 2005-11-16), p. 2403-2403
    In: Blood, American Society of Hematology, Vol. 106, No. 11 ( 2005-11-16), p. 2403-2403
    Abstract: Heat shock proteins (HSP) have been implicated in autoimmune diseases such as type I diabetes mellitus, systemic lupus erythematosus, and multiple sclerosis, in which T cell proliferative responses or autoantibodies towards endogenous HSP have been detected (Journal of Autoimmunity2003;20:313). HSP70 can function as an endogenous ‘danger’ signal, acting on antigen-presenting cells and critically influencing the decision between induction of tolerance and immunity upon antigen encounter (Millar et al. Nature Medicine2003; 9:1469). We studied T-cell proliferative responses and auto-antibodies to human HSP60, HSP70 and HSP90 proteins in 20 newly diagnosed aplastic anemia patients, peripheral blood was obtained (11 females, 9 males; age average 36.1±19 years). A non-isotopic immunoassay was used for BrdU incorporation into proliferative T cells and ELISA to measure HSP antibody titer. T cell proliferation was measured as the Eu-fluorescence in a time-resolved fluorometer. A positive result was defined as 〉 2 standard deviations (SD) from the mean of the controls. T-cell responses to HSP70 in the patient group (N=20; mean±SD Eu-fluorescence= 47,129±36,248) were significantly greater than those of the control group (N=18 healthy adult; mean Eu-fluorescence= 23,941±12,996; p=0.01). Fifty percent of the patients showed increased T cell proliferation after HSP70 stimulation compared to 5% in the control group (p=0.03). T-cell responses of the patient group to HSP90 and HSP60 were similar to those of the control group. Twenty percent of patients showed increased T cell proliferation to HSP 60 and HSP 90 stimulation compared to 5% in the control group (p=0.363). HSP antibody (IgG/A/M) seropositivity was 25% to HSP60, 50% to HSP70, and 5% to HSP90 in patients and 8% to HSP60, 0% to HSP70, and 0% to HSP90 in controls. Heightened autoimmunity to HSP70, but not to HSP60 and HSP90, is a feature of acquired aplastic anemia at presentation.
    Type of Medium: Online Resource
    ISSN: 0006-4971 , 1528-0020
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    Language: English
    Publisher: American Society of Hematology
    Publication Date: 2005
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  • 5
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    American Society of Hematology ; 2018
    In:  Blood Vol. 132, No. Supplement 1 ( 2018-11-29), p. 5456-5456
    In: Blood, American Society of Hematology, Vol. 132, No. Supplement 1 ( 2018-11-29), p. 5456-5456
    Abstract: INTRODUCTION:Chronic myeloid leukemia is a rare hematologic malignancy. The incidence and prevalence of the disease vary between countries. However, the treatment success rate is over 90%, and the first choice for treatment is tyrosine kinase inhibitors. The most important factor in the success of treatment is the compliance of the medicine treatment and using effective dosage of the TKI.The incidence of patients with chronic renal disease (CKD) and hemodialysis (HD) treatment is much higher than that of CML. Although there is no data about the incidence of CKD in CML patients.The rate of CKD in CML patients is stated as % 2.6 by Hoffman et al. at a review about EUTOS population based registry of CML.The frequency of hemodialysis patients in CML patients is unknown.There is no data on the use of TKI in CML patients undergoing hemodialysis both drug approval procedure and during the post marketing period. In this case report, we want to share our experience about CML therapy in a patient with hemodialysis treatment who applied to our clinic.This is the fifth patient case report in the literature. CASE REPORT:A 53-year-old female patient was referred to our hematology clinic after detection of leukocytosis in a whole blood test. Patient is followed up due to renal atrophy and treated with hemodialysis in our nephrology department.When the hemogram values of the last ten years were examined, it was determined that neutrophilic leukocytosis started on February 2017 and progressed gradually. Following the exclusion of possible causes of leukocytosis during the evaluation, peripheral blood smear test ,bone marrow biopsy and aspiration ,genetic tests was done from bone marrow blood examples.She was diagnosed with chronic phase CML according to the results of genetic tests and bone marrow biopsy pathology evaluation .After diagnosis confirmed, imatinib was began at a dose of 100 mg /day. Third month of treatment,the molecular response evaluation was found to be consistent with the complete molecular response (MR:4.5), and it was seen that this response was also preserved in the 6-month. In the course of this 6-month period, imatinib was first increased to 200 mg / day and then to 300 mg / day without any side effect or response loss. DISCUSSION: In the literature, the relationship between CML and renal disease has been studied under the headings of tumor lysis syndrome, cancer related membranous glomerulopathy, imatinib after renal transplantation, acute renal damage with imanitinib.Due to the rarity of CML, data on CML therapy in CKD and especially in hemodialysis patients are scarce. A total of 4 cases together with our case were identified in the literature. (3 cases Onaka et al., American Journal of Hematology, 2012 and 1 case Özdemir et al., American Journal of Hematology, 2006).Due to the very rare association, and the complex nature of CKD including altered drug metabolism, accompanying diseases, hemodialysis-specific conditions, treatment decisions are even more difficult to obtain.There is insufficient data on the use of imatinib mesylate in hemodialysis patient.There is no data on the safety and efficacy of imatinib mesylate in hemodialysis patients.The imatinib dose used in reported cases is between 100 mg and 400 mg and is given between 1 and 4 hours after hemodialysis. The response status of the treatment is changing from case to case. For this reason, it is not possible to make a definite recommendation. In our case,we started with 100 mg / day dose, and we gradually increased dose 300 mg/day dose and response is major molecular response.Data from this group of patients during multicentre clinical trials must be shared. Disclosures No relevant conflicts of interest to declare.
    Type of Medium: Online Resource
    ISSN: 0006-4971 , 1528-0020
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    Language: English
    Publisher: American Society of Hematology
    Publication Date: 2018
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  • 6
    In: Blood, American Society of Hematology, Vol. 128, No. 22 ( 2016-12-02), p. 129-129
    Abstract: The use of monoclonal anti-CD20 antibody (Rituximab) has greatly improved the treatment of B-cell mediated autoimmune diseases, albeit with variable outcomes. Our previous data in humans suggested that Rituximab induced paradoxically the settlement of splenic long-lived plasma cells (LLPC) in the context of 2 autoimmune cytopenia, immune thrombocytopenia and warm autoimmune hemolytic anemia (1) (2). The presence of splenic autoreactive LLPC explained the failure of Rituximab treatment. To investigate whether this mechanism could have a general relevance and decipher the cellular and molecular mechanism of this process, we used both non auto-immune and auto-immune mouse models. We have taken advantage of the knock-in transgenic mouse model AID-CreERT2-EYFP, which allows the irreversible expression of EYFP in B cells engaged in a germinal center-dependent immune response after tamoxifen regimen, to follow plasma cells (PC) at different times of immunization by sheep red blood cells, and upon anti-CD20 regimen (clone 18B12, Biogen Idec), in the spleen and bone marrow (3). By using a set of diagnostic genes that allowed us to distinguish short-lived and long-lived plasma cells, we compared the transcriptional program by multiplex PCR of EYFP+ B220- PC from controls and anti-CD20 treated mice, immunized and analyzed at the same time, corresponding to the nadir of B-cell depletion. While splenic PC of untreated mice displayed an intermediate profile between short-lived and long-lived plasma cells, splenic PC from anti-CD20 treated mice composed a homogeneous population that displayed a more mature program, similar to the one of natural long-lived bone marrow PC. The absolute number of splenic EYFP+ B220- did not change upon anti-CD20 treatment indicating that B-cell depletion promoted PC differentiation rather than a long-lived PC selection. We identified BAFF (B-cell activating factor) as a major player of this process. Indeed, as described in human spleens, we observed that BAFF level was increased in the supernatants of splenocytes after B-cell depletion. Above all, combination of anti-CD20 and anti-BAFF (clone 10F4, GSK) antibodies dramatically reduced the number of splenic EYFP+B220- LLPC (decrease 〉 5 fold compared with anti-CD20 and control groups, P 〈 0.001). Targeting BAFF had no major impact on protective long-lived bone marrow PC as IgG1 level in the sera remained unchanged after combination therapy. We identified neutrophils as the main source of BAFF production in the spleen. Finally, CD4+ T-cells also appeared to play a key role in context of B-cell depletion for supporting plasma cell survival in the spleen as they appeared to closely interact with EYFP+ plasma cells by confocal microscopy. Moreover, their depletion (clones YTS 191.1 or GK 1.5, Bioxcell) in vivo induced a significant decrease in the number of splenic LLPCs (decrease 〉 2 fold compared with anti-CD20 group, P 〈 0.05). To assess whether B-cell depletion could also modify the splenic plasma cell program in an auto-immune context characterized by an ongoing immune response, we used NZB/NZW mice that spontaneously develop a disease closely resembling human systemic lupus. In line with our previous findings, anti-CD20 treatment also promoted the differentiation of LLPC in the spleen of the NZB/NZW model, while a treatment combining anti-CD20 with anti-BAFF induced a marked reduction in total PC numbers(decrease 〉 3 fold compared with anti-CD20 group, P 〈 0.05). In conclusion, the process of PC maturation upon anti-CD20 treatment appeared to be a general mechanism, both in non auto-immune and auto-immune models. We identified BAFF and CD4+ T-cells as key factors in the splenic environment responsible for the emergence of such LLPC. Finally, our results suggest that interfering with the plasma cell survival niche with monoclonal anti-BAFF antibody at the time of B-cell depletion might greatly improve the response rate in B-cell mediated auto-immune cytopenia. (1) Mahevas M, et al, Journal of Clinical Investigation , 2013 (2) Mahevas M, et al, Journal of Autoimmunity, 2015 (3) Dogan I, et al, Nature Immunology, 2009 Disclosures No relevant conflicts of interest to declare.
    Type of Medium: Online Resource
    ISSN: 0006-4971 , 1528-0020
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    Language: English
    Publisher: American Society of Hematology
    Publication Date: 2016
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  • 7
    In: Blood, American Society of Hematology, Vol. 138, No. Supplement 1 ( 2021-11-05), p. 3358-3358
    Abstract: Introduction: Cohesin complex genes are commonly mutated in cancer particularly in myeloid malignancies. Yet patients with germline mutations in cohesin genes, leading to cohesinopathies like Cornelia-de-Lange syndrome (CdLS) are generally not known to be tumor-prone. The complex plays a major role in chromosome alignment and segregation (Uhlmann, Nature Reviews Molecular Cell Biology, 2016), homologous recombination-driven DNA repair (Ström et al., Molecular Cell, 2004) and regulation of gene expression (Busslinger et al., Nature, 2017). To deepen the understanding of cohesin variants in cancer predisposition, we performed TRIO Sequencing in two independent pediatric cancer cohorts. Thereby, we identified a novel recurrent heterozygous germline variant in the cohesin gene RAD21 not described in CdLS patients , located in the binding domain of the cofactors WAPL and PDS5B . Methods: Whole exome sequencing (WES) in a TRIO (child-parent datasets) setting was carried out in two independent, unselected cancer cohorts (TRIO-D, n=158 (Wagener et al., European Journal of Human Genetics, 2021) and TRIO-DD, n=60). To investigate the oncogenic potential of the novel RAD21 variant molecular and functional assessment was performed focusing on potential implications on the complex. Results: The newly identified RAD21 variant at amino acid position 298 resulting in a Proline to Serine (p.P298S) and a Proline to Alanine exchange, respectively, (p.P298A) is only rarely mutated in the general population (gnomAD database n=118,479; RAD21 p.P298S MAF & lt;10 -6 and RAD21 p.P298A MAF & lt;10 -5). While both patients did not show any signs of CdLS, they both have a remarkable family history of cancer. Patient 1 (13y) was diagnosed with T-cell acute lymphoblastic leukemia (T-ALL) whose father had died from breast cancer (41y), while patient 2 (2y) presented with precursor B-cell lymphoblastic lymphoma (pB-LBL) whose uncle had died from pediatric cancer of unknown subtype (8y). To assess the influence of RAD21 p.P298S/A on the binding capacity of the complex, RAD21 variants and the wildtype (WT) were cloned and transfected into HEK293T cells, respectively. Immunoprecipitation analysis of RAD21 with the cofactors WAPL and PDS5B showed no differential binding between the WT and the variants, suggesting that RAD21 p.P298S/A does not impact the formation of the complex. Nevertheless, on a transcriptional level 83 genes were significantly differentially expressed in RAD21 p.P298S and p.P298A compared to the wildtype (fc & gt;1.5, adj. p-value & lt;0.05) with enrichment of genes in p53 signaling pathways. We further observed an increased number of γH2AX and 53BP1 co-localized foci compared to the WT (p≤0.01; Student's t-test). In line, following ionizing radiation, primary patients' samples showed increased cell cycle arrest at G2/M cell-cycle stage compared to a healthy control (p.P298S: p=0.0049 [6Gy]; p=0.0026 [10Gy] ; p.P298A: p=0.0054 [6Gy]; p=0.0006 [10Gy] ; Student's t-test). For cross-validation of the germline variant RAD21 p.P298S/A and its potential role in pediatric lymphoblastic malignancies, we analysed a third cohort of 150 children with relapsed ALL (IntReALL) for RAD21 p.P298S/A. We again identified RAD21 p.P298A in a boy (12y) with B-cell precursor acute lymphoblastic leukemia. To compare our data to a non-pediatric cancer setting, a cohort of 2300 young adults ( & lt;51 years) with cancer was mined (MASTER program). Here, one patient carrying RAD21 p.P298A with a solid tumor was identified. Therefore, amongst all cohorts, RAD21 p.P298S/A was found to be enriched in pediatric vs. adult cancers (3/479 vs. 1/2299; Fisher's exact test; p=0.018). Conclusion: Taken together, we present for the first time the potential role of RAD21 germline variants in pediatric lymphoblastic malignancies. This may shed new light on the many roles of the cohesin complex and its implication outside the typical syndromal presentation. Disclosures No relevant conflicts of interest to declare.
    Type of Medium: Online Resource
    ISSN: 0006-4971 , 1528-0020
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    Language: English
    Publisher: American Society of Hematology
    Publication Date: 2021
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  • 8
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    American Society of Hematology ; 2018
    In:  Blood Vol. 132, No. Supplement 1 ( 2018-11-29), p. 5833-5833
    In: Blood, American Society of Hematology, Vol. 132, No. Supplement 1 ( 2018-11-29), p. 5833-5833
    Abstract: Background: In addition to a drug's anti-tumor efficacy and tissue toxicity, it is now apparent that affordability is a pivotal factor determining the net therapeutic value of an anti-cancer compound. Cost-Effectiveness Analyses (CEA) are therefore key to appreciating the overall balance between the clinical and economical repercussions of a pharmaceutical agent. We aimed to investigate the cost-effectiveness data of newly approved drugs in cancer care. Methods: The FDA website was reviewed for all drugs approved for any cancer indication between the years 2015-2017. A systematic search of Pubmed and Google Scholar was conducted for Cost-Effectiveness Analyses (CEA) of each of these medications. Average Wholesale Prices were collected from Uptodate.com. Results: 30 drugs were approved for cancer indications in 2015-2017. Each of the approved drugs had an average of 1.27 CEA studies (range 0-6). 4 of the 38 (10.5%) available CEAs were done before approval of an index drug. 18 (60%) of the approved medications had an available published CEA at the time of our search (March, 2018). Partition survival modelling (31.5%) and Markov modelling (26.3%) were the most common methods of analysis. 47.3% (18/38) of the CEAs were thought to reflect a favorable ICER per the analysis's investigators. The nature of the malignancy (solid versus hematologic) did not distinguish between the mean number of a drug's CEAs (1.25; 1.2) but drugs for solid cancer indications were less likely to be associated with a favorable CE assessment compared with hematological cancers (47.8% versus 58.3%). "Expensive" drugs (defined as monthly cost greater than 8,618 dollars) had a lower mean number of CEA studies than "less expensive" drugs (1.09 versus 1.36) and were less likely to be associated with a favorable cost-effectiveness profile (27.2% versus 73.6%). 47.3% (18/38) of the economic evaluations were published as conference proceeding/abstract, 36.8% (14/38) were in the form of a full-text article, and the remainder as journal letters or conference posters (6/38; 15.7%). Conclusion: Insufficient data on the cost-effectiveness profile of novel anti-cancer medications jeopardises our ability to determine their real value. Although these drugs are being routinely used in a large-scale fashion, gaps persist as to their financial harm relative to the associated (potential) clinical benefit. Our study shows that recently-approved anti-cancer drugs have a very small number of CEAs to back their clinical-societal merit. Paradoxically, more costly drugs have fewer CEAs compared with cheaper drugs. Also of note, the majority of the analyses followed the approval of the drug, were published in a non full-text format, and were associated with non-sustainable ICER values. We argue that publication of rigorous, peer-reviewed CEAs should be a mandatory pre-approval step for academia/industry and serve as a pre-requisite to the routine distribution and usage of new cancer-directed medications. Disclosures No relevant conflicts of interest to declare.
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    Publisher: American Society of Hematology
    Publication Date: 2018
    detail.hit.zdb_id: 1468538-3
    detail.hit.zdb_id: 80069-7
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  • 9
    Online Resource
    Online Resource
    American Society of Hematology ; 2013
    In:  Blood Vol. 122, No. 21 ( 2013-11-15), p. 5249-5249
    In: Blood, American Society of Hematology, Vol. 122, No. 21 ( 2013-11-15), p. 5249-5249
    Abstract: In Polycythaemia Vera (PV), the RBC lineage is involved with increased haemoglobin, RBC count and haematocrit. WHO diagnostic criteria for PV are JAK2 V617F mutation and elevated red cell mass (RCM) 〉 25% of mean normal value. In addition, tests of marrow hypercellularity, blood erythropoietin and colony formation, are minor criteria. However, the diagnostic role of RCM test is still controversial and requires clarification. In this work, PV patients who had both an RCM study and JAK2 V617F mutation test, and routine laboratory tests, are evaluated to check if RCM was essential in the diagnostic work up for PV. Methods Over 2 years, 75 patients with abnormal haematocrit (men ≥ 0.50, women ≥ 0.45) had RCM and JAK2 V617F mutation tests (except JAK2 exon 12 mutation). All subjects consented to the study approved by the ethics committee. RCM was done by Cr-51 RBC radiolabeling method (no prior venesection at least 1 month). Statistical analysis involved descriptive statistics and chi-square test. Results There were 71 males and 4 females, mean age 46 y (range 17-75 y). Increased RCM was found in 41/75 (55%). Positive JAK2 V617F was found in 13/75 patients (17%), who also had RCM above the mean normal predicted value, however, when the WHO RCM criteria were applied, only 7/13 (54%) could be considered as having “truly” increased RCM. In the patient group with negative JAK2 V617F test, 12/28 (43%) had RCM results as per WHO criteria. There was no statistical association between presence of JAK2 V617F and the RCM values. Conclusion In patients with negative JAK2 V617F but with high clinical suspicion for PV and all other causes of secondary and idiopathic erythrocytosis excluded, an increase in RCM would support the diagnosis of PV (about 10 % PV cases). In patients with JAK2 positive mutation and high haematocrit but RCM below the WHO cut-off level, an increased RCM would still count to confirm the diagnosis as the current standard level seems too stringent. References James C, Ugo V, Le Couedic JP, Staerk J, Delhommeau F, Lacout C et al. A unique clonal JAK2 mutation leading to constitutive signaling causes polycythaemia vera. Nature 2005; 434(7037): 1144-8. Kralovics R, Passamonti F, Buser AS, Soon-Siong T, Tiedt R, Passweg JR, et al. A Gain-of-Function Mutation of JAK2 in Myeloproliferative Disorders. Merck Manual of Diagnosis and Therapy. 16th Edition, 1992 McMullin MF, Bareford D, Campbell P, Green AR, Claire Harrison C, Hunt B, Oscier D, et al. Guidelines for the diagnosis, investigation and management of polycythaemia/erythrocytosis. British Journal of Haematology 2005; 130(2): 174-95. Scott LM, Tong W, Levine RL, et al. JAK2 exon 12 mutations in polycythemia vera and idiopathic erythrocytosis. N Engl J Med. 2007;356:459-468. Pardanani A, Lasho TL, Finke C, et al. Prevalence and clinicopathologic correlates of JAK2 exon 12 mutations in JAK2V617F-negative polycythemia vera. Leukemia. 2007;21:1960-1963. Pancrazzi A, Guglielmelli P, Ponziani V, et al. A sensitive detection method for MPLW515L or MPLW515K mutation in chronic myeloproliferative disorders with locked nucleic acid-modified probes and real-time polymerase chain reaction. J Mol Diagn. 2008;10:435-441. Disclosures: No relevant conflicts of interest to declare.
    Type of Medium: Online Resource
    ISSN: 0006-4971 , 1528-0020
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    Language: English
    Publisher: American Society of Hematology
    Publication Date: 2013
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  • 10
    In: Blood, American Society of Hematology, Vol. 132, No. Supplement 1 ( 2018-11-29), p. 4119-4119
    Abstract: Introduction: Anti-CD 19 directed CAR-T cell therapy has shown very promising effects in treatment of diffuse-large B-cell lymphoma (DLBCL). However, a substantial fraction of patients does not respond to treatment or relapses after approximately three to six months [Schuster, NEJM, 2017; Neelapu, NEJM, 2017]. Resistance mechanisms against anti-CD19 directed CAR-T cell therapy have so far only been described in B-cell acute lymphoblastic leukemia (B-ALL) and involve mutations, splice variants or even loss of CD19 [Sotillo, Cancer Discovery, 2015] . To further elucidate mechanisms of acquired resistance in DLBCL, we obtained matched pair tumor samples from four patients before and after treatment with CTL019 treated within the phase II JULIET trial. Methods: We performed whole exome sequencing in one patient (#UKK2) employing one matched normal sample that has been sequenced at a coverage of 130x and one pre-treatment as well as two post-treatment samples that were all sequenced at a coverage of 160x. Whole exome sequencing data were used to reconstruct clonal evolution of DLBCL after treatment with CTL019 as has been described previously [Herling, Nature Communications, 2018]. Furthermore, we obtained biopsies at relapse or disease progression including matched normal samples from three more patients. Whole exome sequencing from the three missing patients as well as 3´RNA sequencing from all four patients' samples are ongoing and results will be updated for presentation at the meeting. Results: The first analyzed patient, #UKK2, is a 67 year old male patient, who had chemotherapy refractory disease after treatment with R-CHOP, R-DHAP and Pixantrone. He showed predominantly pelvic lesions including infiltration of the iliopsoas muscle. The patient achieved a complete response at month 3 (Figure 1A) after CTL019 transfusion. At month 5 he developed new cutaneous lesions on his left thigh (Figure 1B, posttreatment sample 1) as well as new muscle infiltrations on his right quadriceps femoris muscle (posttreatment sample 2) and rectus abdominis muscle. Pathological examination confirmed relapse of CD19 positive DLBCL in both posttreatment samples. Whole exome sequencing from a biopsy obtained before study entry and the above mentioned posttreament biopsies showed clonal evolution of a single missense mutation in PTPRA (N297D). PTPRA encodes for the receptor protein-tyrosine phosphatase alpha, a receptor phosphatase involved in activation of c-Src via dephosphorylation of an inhibitory tyrosine at position 530 (Y530) [Mustelin, Science Signaling, 2002 and Gut, International Journal of Oncology, 2017]. On the other hand, c-Src is an onco-protein known to cause an invasive phenotype and metastasis in different tumor entities [Ishizawar, Cancer Cell, 2004] . All other mutations observed were either already clonal before CTL019 treatment or gained clonality in only one posttreatment biopsy (Figure 1C). Conclusion: To our knowledge, this is the first report identifying clonal evolution during CD19 redirected CAR-T cell therapy in r/r DLBCL involving PTPRA. We hypothesize that this PTPRA mutation contributes to an invasive phenotype and extranodal lymphoma growth pattern allowing the lymphoma to escape from the pattern allowing the lymphoma to escape from the CAR-T cell attack. Genomic workup of patients with pre- and posttreatment biopsies and functional investigation of this hypothesis is ongoing and will be presented. Disclosures Balke-Want: Novartis: Honoraria. Borchmann:Novartis: Consultancy, Honoraria.
    Type of Medium: Online Resource
    ISSN: 0006-4971 , 1528-0020
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    RVK:
    Language: English
    Publisher: American Society of Hematology
    Publication Date: 2018
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    detail.hit.zdb_id: 80069-7
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