Incidence and Risk Factors of Venous Thromboembolism in Patients with Multiple Myeloma Receiving Immunomodulatory Agents

Blood ◽  
2016 ◽  
Vol 128 (22) ◽  
pp. 2624-2624 ◽  
Author(s):  
Miriam Kimpton ◽  
Ryan Buyting ◽  
Daniel J Corsi ◽  
Natasha Rupani ◽  
Marc Carrier ◽  
...  

Abstract Multiple myeloma (MM) is an incurable plasma cell disorder representing 10% of all hematologic malignancies. Cancer is a known risk factor for venous thromboembolism (VTE). Patients with MM are at a particularly high risk of developing VTE owing to patient characteristics (e.g. previous history of VTE), disease characteristics, and treatment characteristics including use of the immunomodulatory agents (IMIDs). Unfortunately, standard criteria to identify the patients most at risk for developing VTE in MM while receiving IMIDs are unknown. We sought to assess the incidence of VTE and its associated risk factors in MM patients receiving IMID therapy. A retrospective cohort study including 1680 consecutive patients with multiple myeloma treated at our centre between January 01, 1995 and January 26, 2016 was conducted. The annual incidence of VTE on immunomodulatory agents including thalidomide, lenalidomide, and pomalidomide was derived. Univariate incidence ratio analyses of VTE for different risk factors was performed including: previous history of VTE, concomitant use of dexamethasone, and ≥/< 6 months after IMID initiation. A total of 309 MM patients treated with an immunomodulatory agent were identified. Nineteen patients were excluded (incomplete data, lost to follow). Of the remaining 290 patients, the mean age was 67.9 and 42.4% were female. Twenty-seven VTE events were recorded. The overall risk ratio was 6.1 for the development of VTE. Patients with a personal history of VTE had an increased risk of suffering a VTE while on IMID therapy (IRR 5.4; CI, 1.9-13.6). The time from the initiation of the IMID therapy (less than 6 months) also increased the risk of developing a VTE (IRR 51.7; CI,19.4-160.1). The concomitant use of dexamethasone was not associated with a statistically significant increased risk (IRR 1.7; CI, 0.3-69.5). Incidence risk ratios for these risk factors are depicted in Table 1. Our results suggest that a personal history of VTE and the time from the initiation of the IMID (less than 6 months) are associated with an increased risk of VTE in MM patients receiving IMID therapy. This may be helpful in determining which multiple myeloma patients treated with an IMID agent warrant more aggressive thromboprophylaxis. Further prospective studies are needed to determine the optimal agent, intensity, and duration of thromboprophylaxis in patients with MM on IMID therapy. Disclosures McCurdy: Celgene: Honoraria.

Blood ◽  
2021 ◽  
Vol 138 (Supplement 1) ◽  
pp. 1220-1220
Author(s):  
Adam Stepanovic ◽  
Lauren Gabriele Banaszak ◽  
Erica Reinig ◽  
Jens Eickhoff ◽  
Ryan J. Mattison

Abstract INTRODUCTION: Venous thromboembolism (VTE) is an important complication of many cancers. Although more widely recognized in solid tumors, VTE is still an appreciable cause of morbidity and mortality among patients with hematologic malignancies. For example, acute promyelocytic leukemia (APL) is a well-recognized risk factor for disseminated intravascular coagulation (DIC), which can lead to thrombosis. Patients with non-APL AML are also at increased risk for VTE, though the exact mechanisms are currently unclear. Thus, we sought to explore how patient demographics, comorbidities, hematologic factors, coagulation parameters, and cytogenetic and molecular profiles impact the incidence of VTE in patients with non-APL AML. METHODS: This was a retrospective observational case-control study of 120 non-APL AML patients treated at the University of Wisconsin-Madison. The electronic health record was manually reviewed for extraction of the relevant clinical information. Coagulation parameters assessed included INR, PTT, fibrinogen, D-dimer, and fibrin monomer. Coagulation data were collected both at diagnosis and during the first 7 days of induction, if applicable. Cytogenetics was categorized based on the presence of a normal karyotype or not. Genomic data were subdivided into eight different functional categories of genes that are commonly mutated in AML. Other factors that could potentially increase the risk of thrombosis were also analyzed, including age, sex, BMI, baseline blood counts, baseline bone marrow blast percentage, previous history of VTE, use of antifibrinolytic agents, and whether blood products were transfused during the early treatment period. The variables of interest between VTE cases and non-VTE cases were compared using the nonparametric Wilcoxon rank sum test. RESULTS: Across the entire cohort (n=120), VTE developed in 25 patients (20.8%) and did not develop in 95 patients (79.2%). Table 1 and Table 2 show comparisons between VTE cases and patients without VTE for both quantitative and categorical variables. Median INR values at diagnosis and across the first 7 days of induction tended to be lower in patients with VTE and reached significance on days 3-5 (p=0.032 for INR-Day 3, p=0.046 for INR-Day 4, p=0.014 for INR-Day 5). Patients with VTE had a median BMI of 30, while patients without VTE had a median BMI of 28, which approached statistical significance (p=0.055). 8% of patients with VTE (2/25) had a history of VTE prior to the diagnosis of AML, while 3% without VTE (3/95) had a history of previous VTE (OR 2.7, p=0.281). Mutation in genes involved in DNA methylation also conferred an increased risk of VTE, with the association approaching statistical significance (p=0.083). There were no other variables that were significantly different between the two groups. CONCLUSIONS: In this cohort of patients with non-APL AML, there was a trend towards lower INR correlating with an increased incidence of VTE. Additionally, higher BMI, previous history of VTE, and mutation in DNA methylation genes were associated with increased incidence of VTE, though these trends did not reach statistical significance. The pathophysiology of VTE in this setting is likely complex and multifactorial. The shorter INR in those who developed VTE suggests a mechanism independent of the development of DIC, which is distinct from APL. The finding that obesity and personal history of VTE, both known risk factors for thrombosis, were associated with an increased incidence of VTE is also consistent with a non-DIC mechanism. Mutations in DNA methylation genes may have contributed to increased risk of VTE in this cohort; while this association is compelling, further studies with larger sample sizes are needed to confirm this finding. This study was limited by small sample size and missing data, especially regarding available data on coagulation tests. However, this analysis uncovers interesting associations that shed light on the pathophysiology of VTE in AML. More research is needed to further elucidate risk factors for VTE in order to provide optimal supportive care for this patient population. Figure 1 Figure 1. Disclosures No relevant conflicts of interest to declare.


Blood ◽  
2016 ◽  
Vol 128 (22) ◽  
pp. 4755-4755
Author(s):  
Joshua Taylor ◽  
Alexandra Anghel ◽  
Daniel J Corsi ◽  
Marc Carrier ◽  
Alan Tinmouth ◽  
...  

Abstract Background: Patients with sickle cell disease (SCD) are at an increased risk of developing venous thromboembolism (VTE). However, the underlying risk of VTE complication during hospitalization is unclear in this patient population. We sought to report the incidence of VTE and its associated risk factors in hospitalized SCD patients. Patients/Methods: A retrospective cohort study of SCD patients requiring hospitalization was undertaken at a tertiary care center. Incidence ratios of VTE per hospitalization for different risk factors (Thromboprophylaxis use, central venous catheter (CVC), past history of VTE, surgery during hospitalization) were assessed. Univariate, age adjusted and multivariate Poisson models were estimated accounting for the repeated hospitalizations per patients. Results: A total of 101 patients with at least one hospitalization were included in the study. The mean of number of admissions per patients was 8.9. Overall, 17 out of 896 (1.9%) admissions were complicated by VTE. The incidence of VTE varied by risk factors, from 0.8% in patient without CVC to 6.7% among patients admitted with previous history of VTE. Age adjusted and multivariate Poisson models for incidence rate ratios of VTE per hospitalization among patients with SCD for different risk factors are depicted in Table 1. Conclusion: The risk of VTE seems low in hospitalized SCD. A prior history of VTE and a hospitalization for surgery might be associated with higher risk of VTE complication. Future studies assessing these risk factors to tailor thromboprophylaxis regimens are needed. Disclosures No relevant conflicts of interest to declare.


Blood ◽  
2020 ◽  
Vol 136 (Supplement 1) ◽  
pp. 7-7
Author(s):  
Anna L. Parks ◽  
Swetha Kambhampati ◽  
Bita Fakhri ◽  
Charalambos Andreadis ◽  
Lissa Gray ◽  
...  

Introduction: Chimeric antigen receptor modified T Cell (CAR-T) therapy is a rapidly developing treatment for patients with relapsed/refractory (R/R) B-cell non-Hodgkin lymphoma (NHL) or multiple myeloma (MM). Although this population is at high risk for thrombosis, there are few data about rates of venous thromboembolism (VTE) and arterial thromboembolism (ATE) with CAR-T. Additionally, treatment with anticoagulation is complicated because of the prevalence of thrombocytopenia following CAR-T. Our goal was to determine the incidence, associated risk factors, management and outcomes of VTE and ATE in the 60 days following CAR-T therapy. Methods: We performed a single-center, retrospective cohort study of all patients who received inpatient CAR-T cells at UCSF Medical Center between January 2018 and May 2020 for R/R NHL or MM as standard-of-care or on a clinical trial. The outcomes of incident VTE and ATE were identified by ICD-10 codes and medical record review. Patient characteristics, pre-existing thrombosis risk factors, laboratory results, medications, and major or clinically relevant non-major bleeding or recurrent thrombotic complications were obtained through chart review. We used descriptive statistics to delineate risk factors, incidence, management and outcomes of thrombotic events. Results: Ninety-one patients who underwent CAR-T therapy were included in the analysis, 37 with NHL and 54 with MM. For NHL, mean age was 63 (range 38-82), and 41% were women. For MM, mean age was 62 (range 33-77), and 50% were women. Patients with NHL were treated with either investigational or Federal Drug Administration-approved CD19-directed therapies, and patients with MM were treated with a variety of investigational B-cell maturation antigen-directed (BCMA) therapies. For thrombotic risk factors, 13% of patients with NHL had a history of VTE, 3% had a history of ATE, 27% had a BMI ≥30, 59% had a recent procedure including central venous catheter (CVC) placement, 14% had an intensive care unit (ICU) stay, and 22% had an infectious complication in the 30 days pre- or post-CAR-T. Forty-one percent of patients with NHL had neurotoxicity of any grade, and 59% had CRS of any grade. At 30 days, 57% had a complete response, 41% had a partial response, 3% had stable disease. For MM, 6% of patients had a pre-existing history of VTE, 2% had a history of ATE, 19% had a BMI ≥30, 96% had a recent procedure, 11% had an ICU stay and 19% had an infection. Seventeen percent had neurotoxicity, and 85% had CRS. Thirty-two percent of patients with NHL and 48% with MM received pharmacologic VTE prophylaxis while undergoing CAR-T. For those who did not receive VTE prophylaxis, thrombocytopenia was the reason for holding prophylaxis, which occurred in 51% and 50% of NHL and MM patients, respectively. In the 60 days post-CAR-T, 4 (11%) patients with NHL were diagnosed with VTE-3 pulmonary embolism (PE) and 1 lower extremity deep vein thrombosis (DVT) associated with a previously placed inferior vena cava filter. Four (7%) patients with MM were diagnosed with VTE-1 PE and 3 upper extremity DVTs associated with CVCs. Five out of these 8 (63%) patients had symptomatic VTE, while the remainder were incidental on PETCT. Mean time from CAR-T infusion to VTE diagnosis was 20 days (range 6-39 days). There were no documented ATEs. Six out of 8 (75%) were treated with therapeutic anticoagulation. Of those who were anticoagulated, 4 patients received direct oral anticoagulants and 2 received low-molecular-weight-heparin. Duration was 3 months in 3 patients, 11 days in 1, 150 days in 1, and indefinitely in 1 with atrial fibrillation. Among all 8 patients with VTE, there were no bleeding events or recurrent thromboses regardless of whether or not they received anticoagulation. Discussion: In this cohort of patients with R/R NHL or MM who received either CD19- or BCMA-directed therapies, almost 1 in 10 developed VTE in the 60 days post-CAR-T. This occurred in the context of a high prevalence of risk factors for thrombosis and low rates of pharmacologic prophylaxis. Among those who developed VTE, the majority were treated with therapeutic anticoagulation for at least 3 months, without documented bleeding or recurrent VTE. Our findings provide crucial information on a common complication that can inform patients, clinicians and researchers and should be expanded upon in larger, prospective studies to identify optimal preventive and therapeutic strategies. Disclosures Fakhri: University of California San Francisco: Current Employment. Andreadis:Jazz Pharmaceuticals: Honoraria; Karyopharm: Honoraria; Incyte: Consultancy; Merck: Research Funding; Gilead/Kite: Consultancy; Novartis: Research Funding; BMS/Celgene/Juno: Honoraria, Research Funding; Genentech: Consultancy, Current equity holder in publicly-traded company. Wong:Janssen: Research Funding; Amgen: Consultancy; Roche: Research Funding; Fortis: Research Funding; Sanofi: Membership on an entity's Board of Directors or advisory committees; Bristol Myers Squibb: Research Funding; GSK: Research Funding. Shah:BMS, Janssen, Bluebird Bio, Sutro Biopharma, Teneobio, Poseida, Nektar: Research Funding; GSK, Amgen, Indapta Therapeutics, Sanofi, BMS, CareDx, Kite, Karyopharm: Consultancy.


2019 ◽  
Vol 37 (15_suppl) ◽  
pp. e13070-e13070
Author(s):  
Hamzah Abu-Sbeih ◽  
Faisal Ali ◽  
Wei Qiao ◽  
Phillip Lum ◽  
Mehnaz Shafi ◽  
...  

e13070 Background: In the last two decades, the incidence of colorectal cancer (CRC) has decreased dramatically after the implementation of CRC screening in the United States. Several risk factors for colonic adenoma (CA), the main precursor for CRC, have been found. Whether personal history of non-colorectal cancer (NCRC) is a risk factor for CA has not been studied. Here, we assess the risk of CA in patients with NCRCs. Methods: We conducted a retrospective study of cancer patients who underwent colonoscopy after cancer diagnosis between 2009 and 2018. We included patients without history of NCRC as a control group. Multivariate logistic regression was used to assess independent risk factors for CA (Table 1). Results: Total of 9408 patients with NCRC were included; CA was detected in 4503 (48%). Histology revealed tubulovillous features in 611 (14%) patients and villous in 51 (1%). High grade dysplasia was detected in 1,317 (29%) patients and adenocarcinoma in 388 (9%). The rate of adenocarcinoma was the highest in patients with multiple myeloma (14%). Adenoma detection rate (ADR) was 30% in patients younger than 40 years ( n= 1621), 32% in patients between 40 and 50 years ( n= 812), 47% in patients between 50 and 60 years ( n= 2892), and 55% in patients older than 60 years ( n= 4493). Multivariate analysis revealed an increased risk of CA with old age, male sex, family history of CRC, and high body mass index ( P< 0.05). The median time from NCRC diagnosis to CA detection was 3 years (IQR 1-8). Conclusions: ADR in patients with a personal history of NCRC is higher than the ADR of patients without NCRC. CRC screening should be performed after the diagnosis of NCRC is made, even if it was before the standard threshold of CRC screening age of 50 years.[Table: see text]


2009 ◽  
Vol 27 (29) ◽  
pp. 4848-4857 ◽  
Author(s):  
Anna Falanga ◽  
Marina Marchetti

Patients with hematologic malignancies are at high risk of thrombotic or hemorrhagic complications. The incidence of these events is greatly variable and is influenced by many factors, including the type of disease, the type of chemotherapy, and the use of a central venous device. As in solid tumors, a number of clinical risk factors have been identified and contribute to the increasing thrombotic rate in hematologic malignancies. Biologic properties of the tumor cells can influence the hypercoagulable state of patients with these malignancies by several mechanisms. Of interest, oncogenes responsible for neoplastic transformation in leukemia also may be involved in clotting activation. Epidemiologic data allow an estimate of the incidence of venous thromboembolism (VTE) in acute leukemia, lymphomas, and multiple myeloma (MM). In this review, we focus on the epidemiology, pathogenesis, and VTE management in these three hematologic malignancies. No recommendation for routine thromboprophylaxis in these conditions, with the exception of MM, is available. Large, prospective, randomized clinical trials are needed to establish the best practice for thromboprophylaxis and treatment of VTE in these types of cancers.


2021 ◽  
Vol 5 (3) ◽  
pp. 307
Author(s):  
Riani Widia Parantika ◽  
Gatut Hardianto ◽  
Muhammad Miftahussurur ◽  
Wahyul Anis

Background: Preeclampsia can threaten the health of the mother and fetus during pregnancy and childbirth, besides that it also increases the risk of long-term complications and has the potential to cause death. The incidence of preeclampsia at the RSUD Engku Haji Daud Tanjung Uban showed an increase in the last three years, namely the occurrence from 2017 as many as 23 cases to 56 cases in 2019. The condition of preeclampsia can worsen quickly and without warning, for that, it must be detected and managed appropriately. This study aimed to identify the association of obesity, multiple pregnancies, and previous history of preeclampsia with the incidence of preeclampsia in maternity women. Methods: This study uses a case-control study design. Performed on women giving birth in the period January – December 2019, consisting of 56 cases and 112 controls. Maternal women with preeclampsia were cases and women who were not diagnosed with preeclampsia were controls. The data was obtained from the respondents' medical records, then analyzed using the Chi-Square test or Fisher's Exact test with a value of = 0,05. Results: Obesity was associated with an increased risk of preeclampsia (OR= 4,746, 95% CI 2,381-9,460; P=0,000). Multiple pregnancies were associated with a significantly increased risk of preeclampsia (OR=15,857, 95% CI 1,899-132,384; P=0,002). Likewise, a previous history of preeclampsia was associated with a markedly increased risk of preeclampsia (OR=99,000, 95% CI 22,057-444,343; P=0,000). Conclusion: Based on these data, it was found that obesity, multiple pregnancies, and previous history of preeclampsia were significant risk factors for the occurrence of preeclampsia. It is important to identify risk factors for preeclampsia early, so that appropriate management can be carried out, to prevent complications.


Blood ◽  
2019 ◽  
Vol 134 (Supplement_1) ◽  
pp. 3298-3298
Author(s):  
Radhika Gangaraju ◽  
Yanjun Chen ◽  
Lindsey Hageman ◽  
Jessica Wu ◽  
Wendy Landier ◽  
...  

BACKGROUND: BMT recipients are vulnerable to accelerated atherosclerosis due to prior exposure to radiation with or without chemotherapy, and consequent long-term cardiovascular morbidity, such as stroke. A comprehensive evaluation of the risk of late-occurring stroke in adult BMT survivors and the associated risk factors has not been performed. We addressed this gap using the resources offered by the BMTSS. METHODS: BMTSS includes patients transplanted between 1974 and 2014 at 3 US sites who survived ≥2y after BMT, were alive and ≥18y at BMTSS survey completion. The survey asked participants to report if a healthcare provider had diagnosed specific chronic health conditions (including stroke), or relapse of primary cancer or development of new cancer, along with age at diagnosis. The participants provided information on sociodemographics, health behaviors and medication use. Medical record abstraction was used for information regarding primary cancer diagnosis, therapeutic exposures (pre-BMT chemotherapy/radiation, transplant preparative regimens), stem cell source (autologous, allogeneic), graft type (bone marrow, cord blood or peripheral blood stem cells), and history of chronic graft vs. host disease (GvHD). A cohort of 908 siblings also completed the BMTSS survey and served as a comparison group. Informed consent was obtained from all participants. RESULTS: The study included 3,479 BMT survivors; 50.3% had received an allogeneic BMT, 54.8% were males; 71.4% were non-Hispanic whites. Median age at study participation was 59y (range: 18-89y) for BMT survivors and 57y (range: 18-90y) for siblings. Patient characteristics are shown in Table 1. BMT survivors were followed for a median of 9y (range: 2-41 y) from BMT. Stroke was reported by 136 BMT survivors (67 allogeneic, 69 autologous); of these, 75 (55%) patients developed stroke ≥2y after BMT. Conditional on surviving ≥2y after BMT, the 10y cumulative incidence of stroke was 3.8% (Fig 1), and was comparable for allogeneic (3.4±0.5%) and autologous (4.2±0.6%) BMT recipients, p=0.3. Stroke in BMT recipients compared with siblings: Using logistic regression, and after adjusting for sociodemographics, physical activity and relevant comorbidities, we found that allogeneic BMT survivors were at a 2.1-fold higher odds of reporting stroke as compared to siblings (95%CI: 1.2-3.7, p=0.01), and autologous BMT recipients were at a 1.7-fold higher odds of reporting stroke compared to siblings (95%CI: 0.9-3.0, p=0.09). Stroke after Allogeneic BMT: History of hypertension (HR=2.2, 95%CI: 1.2-3.9, p=0.007), venous thromboembolism (HR=3.4, 95%CI: 1.6-7.1, p=0.002), diagnosis of acute lymphoblastic leukemia (HR=4.9, 95%CI: 1.6-15.0, p=0.006), acute myeloid leukemia/ myelodysplastic syndrome (HR=5.2, 95%CI: 1.4-19.0, p=0.013) (ref: non Hodgkin lymphoma), pre-BMT exposure to alkylating agents (HR=3.3, 95%CI: 1.3-8.5, p=0.01) and pre-BMT neck radiation (HR=5.4, 95%CI: 1.2-23.8, p=0.03) were associated with increased stroke risk. Exercise was associated with lower stroke risk (HR: 0.5, 95%CI: 0.3-0.9, p=0.01). Stroke after Autologous BMT: The risk factors for stroke in autologous BMT survivors included: increasing age at BMT (HR=1.02/y, 95%CI: 1.0-1.1, p=0.05), history of hypertension (HR=1.8, 95%CI: 1.1-3.2, p=0.03), coronary heart disease (HR=2.8, 95%CI: 1.3-6.4, p=0.01) and venous thromboembolism (HR=2.3, 95%CI: 1.1-4.7, p=0.02). Relapse of primary disease or development of new cancer were not associated with increased stroke risk in either autologous or allogeneic BMT recipients. CONCLUSION: In this large study, we found that the incidence of stroke was 4% among BMT survivors, and that they are at an increased risk of developing stroke when compared to an unaffected comparison group. The study also identified subgroups among BMT survivors at increased risk of stroke such as those who received neck radiation and those with cardiovascular comorbidity. These findings suggest a need for increased awareness of stroke as a late complication of BMT, such that aggressive management of cardiovascular risk factors can be instituted among those at highest risk. Disclosures Weisdorf: Incyte: Research Funding; Fate Therapeutics: Consultancy; Pharmacyclics: Consultancy.


2013 ◽  
Vol 31 (15_suppl) ◽  
pp. e17517-e17517
Author(s):  
Julie Cote ◽  
Olivier Dumas ◽  
Christine Demers ◽  
Julie Lemieux

e17517 Background: Tunnelled catheters (Leonard, BARD) and peripherally inserted central catheters (Piccline, BARD) are used for intravenous therapies in patients with malignancies. Thrombosis is a well known complication, but risk factors are not clearly established. The objective the incidence, risk factors, therapeutic approaches and complications of catheter-related thrombosis among patients with malignancies. Methods: Medical charts of patients with malignancies and Leonard or Piccline inserted, from August 2002 to December 2006 at Hôpital de l’Enfant-Jésus (Québec City, Canada), were retrospectively reviewed. Results: A total of 618 catheters were inserted in 361 patients. Eighty-six percent of the catheters were placed in patients with hematologic malignancies and most were Piccline (70%). Sixty-one thromboses were identified (incidence of 10%). Fourteen percent of the patients had more than one episode of catheter-related thrombosis. The majority of thromboses was related to a Piccline (93%) and occurred at a mean time of 34 days after the insertion. At the time of thrombosis, the mean platelet count was 169 x 109/L. Previous history of a catheter-related thrombosis (OR = 4.30 (1.48-12.50); p = 0.0075) as well as lymphoma (OR = 3.29 (1.22-8.87); p = 0.0185) were associated with superficial thromboses. The Piccline was associated with both types of thromboses (OR = 5.78 (1.69-19.74); p = 0.0051), especially with superficial thromboses. Most of the catheters (88%) were removed once a thrombosis was identified. The management of anticoagulation varied considerably. No complication associated with thromboses was reported. Conclusions: The incidence of central venous catheter-related thrombosis was 10%. The thrombosis occurred on average 34 days after the insertion. The Piccline was associated with all types of thromboses, especially the superficial ones. A previous history of catheter-related thrombosis and lymphoma were risk factors for superficial thromboses. Further studies are necessary to better define characteristics and optimal management of central catheter-related thrombosis.


2007 ◽  
Vol 98 (12) ◽  
pp. 1237-1245 ◽  
Author(s):  
Joachim Dudenhausen ◽  
Andree Faridi ◽  
Thorsten Fischer ◽  
Samson Fung ◽  
Ulrich Geisen ◽  
...  

SummaryWomen with a history of venous thromboembolism (VTE), thrombophilia or both may be at increased risk of thrombosis during pregnancy, but the optimal management strategy is not well defined in clinical guidelines because of limited trial data. A strategy of risk assessment and heparin prophylaxis was evaluated in pregnant women at increased risk of VTE. In a prospective trial (Efficacy of Thromboprophylaxis as an Intervention during Gravidity [EThIG]), 810 pregnant women were assigned to one of three management strategies according to pre-defined risk factors related to history of VTE and thrombophilic profile. Low-risk women (group I), received 50–100 IU dalteparin/ kg body weight/ day for 14 days postpartum, or earlier when additional risk factors occurred. Women at high (group II) or very high risk (group III) received dalteparin from enrolment until six weeks postpartum (50–100 IU and 100–200 IU/ kg/ day, respectively). Objectively confirmed, symptomatic VTE occurred in 5/810 women (0.6%; 95% confidence interval [CI], 0.2 to 1.5%) (group I, 0 of 225; II, 3/469; III, 2/116). The rate of serious bleeding was 3.0% (95 % CI, 1.9 to 4.4%); 1.1% (95 % CI, 0.5 to 2.2%) was possibly dalteparin-related. There was no evidence of heparin- induced thrombocytopenia, one case of osteoporosis, and rates of miscarriage and stillbirth were similar to previous, retrospective studies. Risk-stratified heparin prophylaxis was associated with a low incidence of symptomatic VTE and few clinically important adverse events. Antepartum heparin prophylaxis is, therefore, warranted in pregnant women with idiopathic thrombosis or symptomatic thrombophilia.


Blood ◽  
2018 ◽  
Vol 132 (Supplement 1) ◽  
pp. 1233-1233 ◽  
Author(s):  
Robert Frank Cornell ◽  
Samuel Z. Goldhaber ◽  
Brian G Engelhardt ◽  
Javid Moslehi ◽  
Madan Jagasia ◽  
...  

Abstract Introduction Immunomodulatory/cereblon-binding drugs (IMiDs), including lenalidomide and pomalidomide, have improved survival of patients with multiple myeloma (MM) and comprise the therapeutic foundation at all phases of therapy. While these agents are generally well-tolerated, their increased risk of venous thromboembolism (VTE), in particular deep vein thrombosis and pulmonary embolism, presents a major clinical challenge for the treatment of MM. Apixaban, a direct oral anticoagulant which directly blocks Factor Xa, has been approved for treatment in patients with VTE. Apixaban has not been prospectively evaluated for thromboprophylaxis in MM in the US. In this phase IV single-arm study (NCT02958969), we prospectively evaluate the safety and efficacy of apixaban for primary prevention of VTE in patients with MM receiving IMiD therapy. Methods Fifty patients with MM on IMiD therapy received apixaban 2.5 mg orally twice daily for primary prevention of VTE and were prospectively monitored for 6 months. Patients requiring therapeutic anticoagulation or with history of prior VTE were excluded. Patients stopped aspirin while on apixaban. Primary safety outcomes were rates of major hemorrhage and clinically relevant non-major hemorrhage over 6 months. Major bleeding was defined as overt bleeding associated with a decrease in hemoglobin of ≥ 2 g/dL, requiring transfusion of ≥ 2 units of blood, occurring in a critical site, or contributing to death. Clinically relevant non-major bleeding was defined as overt bleeding not meeting the criteria for major bleeding but associated with medical intervention, surgical intervention, or interruption of the study drug. The primary efficacy outcome was the rate of symptomatic VTE over 6 months. Results Baseline characteristics are listed (Table). Median age was 63 years (range 51-74) with 50% of patients being male. Patients had received a median of 2 lines of therapy (range 0-8), and the majority (82%) had received prior autologous stem cell transplantation (AutoSCT). Patients received apixaban thromboprophylaxis in combination with lenalidomide (58%) or pomalidomide (42%). The majority (66%) received IMiDs for post-autoSCT consolidation or maintenance therapy. Most (80%) had traditional cardiovascular (CV) risk factors prior to initiation of apixaban, including hypertension (50%), obesity (46%), history of smoking (34%) and hyperlipidemia (32%). At planned interim analysis at 3 months (range 23-149 days) with data still being collected for planned 6 month study duration, no patients had experienced major hemorrhage or VTE. Two patients experienced clinically relevant, non-major hemorrhage, including one patient with unprovoked epistaxis lasting more than 5 minutes and another patient with mechanical trauma. These events were medically managed, and both patients were able to resume apixaban. One patient stopped therapy shortly after initiation due to allergic reaction to apixaban manifesting as generalized edema. No patients experienced stroke, myocardial infarction (MI), or death. Conclusions In this pilot study of 50 patients, low-dose apixaban was safe and well tolerated as thromboprophylaxis for patients with MM receiving IMiDs. No patients experienced VTE, major hemorrhage, stroke, or MI. Further randomized studies are needed to validate apixaban as a standard primary prevention anti-thrombotic strategy for patients with MM receiving IMiDs. Disclosures Moslehi: Bristol-Myers Squibb: Consultancy, Research Funding. Jagasia:Incyte Corporation: Membership on an entity's Board of Directors or advisory committees.


Sign in / Sign up

Export Citation Format

Share Document