scholarly journals Long-Term Risk Factors for Occult Cancer Detection in Patients with Unprovoked Venous Thromboembolism: A Post-Hoc Analysis of the Reverse Study

Blood ◽  
2018 ◽  
Vol 132 (Supplement 1) ◽  
pp. 1230-1230
Author(s):  
Nathan Cantor ◽  
Marc Carrier ◽  
Marc A. Rodger ◽  
Gabrielle Veillet-Lemay ◽  
Elham Sabri ◽  
...  

Abstract Background: The diagnosis of an unprovoked (i.e., in the absence of any risk factors) venous thromboembolism (VTE) may be a sign of an underlying cancer. Previous estimates of the incidence rate of occult cancer in patients with unprovoked VTE are as high as 5-10%. However, screening methods to detect cancer early in these patients are of limited clinical value and previous identification of risk factors focused on short-term cancer diagnosis. Therefore, this study will assess the long-term incidence and risk factors of cancer in unprovoked VTE patients. Methods: This retrospective study is a post-hoc analysis of the REVERSE (Recurrent Venous Thromboembolism Risk Stratification Evaluation) study. Patient data was collected following an initial six-month course of anticoagulation therapy and were followed for a mean time period of 5.0 years (range 1 month-8 years). We performed univariable analysis to test the strength of association between each potential predictor variable and occult cancer diagnosis. Furthermore, using forward model selection we created a multivariable model with optimal predictive value for cancer diagnosis. Results: Among 663 patients presenting with unprovoked VTE, 38 (5.7%) subsequently developed a new cancer diagnosis during the follow-up period. The most common types of cancers diagnosed were prostate (21%) and colorectal cancer (16%). Univariate analysis revealed age > 65 (OR 2.59; 95% CI 1.31-4.49, P= 0.0036), elevated D-Dimer (OR 2.71; 95% CI 1.38-5.31, P=0.026) and pulmonary vein obstruction (PVO) score (OR 4.34 95% CI 1.26-14.92, P=0.023) as the strongest predictors of occult cancer. Only D-Dimer (Adj.-OR 2.72 95% CI 1.39-5.32) remained in the multivariate model and no other factor significantly improved the model's fit. Conclusion: Patients with an unprovoked VTE remain at an elevated risk of developing cancer following anticoagulation therapy. Age > 65 years old, elevated D-Dimer, and PVO in pulmonary embolism patients are among potential risk factors for developing occult cancer. More studies are needed to validate these potentially important risk factors. Disclosures Carrier: BMS: Honoraria, Research Funding; Leo Pharma: Research Funding; Pfizer: Honoraria; Bayer: Honoraria. Rodger:Biomerieux: Research Funding. Kovacs:Daiichi Sankyo Pharma Development: Research Funding; Bayer: Research Funding.

2018 ◽  
Vol 170 ◽  
pp. 8
Author(s):  
Nathan Cantor ◽  
Gabrielle Veillet-Lemay ◽  
Elham Sabri ◽  
Marc Carrier ◽  
Michael Kovacs ◽  
...  

2020 ◽  
Vol 185 ◽  
pp. 132-134
Author(s):  
Nathan Cantor ◽  
Marc Carrier ◽  
Marc A. Rodger ◽  
Gabrielle Veillet-Lemay ◽  
Elham Sabri ◽  
...  

Blood ◽  
2019 ◽  
Vol 134 (Supplement_1) ◽  
pp. 4155-4155
Author(s):  
Massimo Breccia ◽  
Jorge E. Cortes ◽  
Neil P Shah ◽  
Giuseppe Saglio ◽  
Antonio Jiménez-Velasco ◽  
...  

Introduction: Early responses to tyrosine kinase inhibitors (TKIs) are associated with improved long-term outcomes in patients with chronic myeloid leukemia in chronic phase (CML-CP), and guideline recommendations support the achievement of major molecular response (MMR) at 18 months as a therapeutic goal in CML treatment. Dasatinib is a first-line (1L) treatment option for patients with CML-CP, and long-term results from the DASISION study have demonstrated that patients on dasatinib achieved faster, deeper, and more durable molecular responses than patients on imatinib (Cortes J et al. J Clin Oncol 2016). Earlier reports have shown that obesity may increase the risk of developing CML (Strom SS et al. Cancer Epidemiol Biomarkers Prev 2009) and that patients with a high body mass index (BMI; > 25 kg/m2) at diagnosis who receive 1L imatinib have a significantly longer median time to response and a reduced rate of MMR compared with patients with a normal BMI (< 18.5-25 kg/m2; Breccia M et al. Cancer Lett 2013). In this exploratory post hoc analysis of the phase 3 DASISION trial (NCT00481247), we further investigated the association of high BMI with treatment responses with 1L TKIs. Methods: DASISION was a multinational, open-label, phase 3 trial of dasatinib versus imatinib for newly diagnosed CML-CP. Patients were randomized to receive 100 mg dasatinib (n = 259) or 400 mg imatinib (n = 260) once daily. Response outcomes were retrospectively stratified on the basis of two BMI categories: high (≥ 25 kg/m2) and normal (< 25 kg/m2). Median time to response was estimated using Kaplan-Meier analysis; Cox proportional hazard models and log-rank tests were stratified by Hasford scores. Molecular response rates were compared using Cochran-Mantel-Haenszel tests (stratified by Hasford scores). P values are descriptive and unadjusted for multiple comparisons. Results: In total, 109 patients with a high BMI and 147 patients with a normal BMI were treated with dasatinib, and 107 patients with a high BMI and 147 patients with a normal BMI were treated with imatinib. Baseline characteristics were balanced within BMI subgroups and are listed in the table below (Table). Median time to complete cytogenetic response (CCyR) was significantly shorter with dasatinib versus imatinib in patients with a high BMI (3.1 vs 6.1 months; P < 0.0001). MMR was also achieved faster in patients with a high BMI who were treated with dasatinib versus imatinib (median time 9.2 vs 27.6 months; P < 0.0001; Figure). More patients with a high BMI treated with dasatinib achieved MMR compared with those treated with imatinib (79.8% vs 59.8%; P = 0.0004). Likewise, 54.1% of patients with a high BMI achieved MR4.5 with dasatinib, compared with 34.6% with imatinib (P = 0.0013). In the normal BMI group, median time to CCyR (5.6 vs 6.0 months; P = 0.1055) and MMR (18.0 vs 21.5 months; P = 0.4095) was faster for dasatinib versus imatinib, and more patients on dasatinib versus imatinib achieved MMR (73.5% vs 67.3%; P = 0.3335) and MR4.5 (36.7% vs 33.3%; P = 0.6344). Although these results were numerically better with dasatinib, the differences were not statistically different. A graphical exploratory analysis suggested that there was no difference in exposures across BMI subgroups with respect to dasatinib. However, imatinib exposure data were not available to make comparisons across the BMI subgroups. There was no major difference in the previously reported adverse event profiles between treatment groups when assessed based on BMI. Any-cause pleural effusion occurred more frequently with dasatinib (34.3% [high BMI] and 24.5% [normal BMI]) compared with imatinib (0% [high BMI] and 2.0% [normal BMI]). Additional analyses are being planned to address the role of any potential confounders (eg, Hasford risk scores). Conclusions: In this exploratory post hoc analysis, patients with a high BMI treated with dasatinib demonstrated a significantly faster time to response compared with imatinib, with an increased percentage of patients also achieving MMR and MR4.5 at 5 years. However, these differences were not apparent in patients with a normal BMI. Although these findings highlight the potential role of BMI in affecting treatment responses to TKIs, additional validation of these findings is necessary to define the overall impact of BMI as a prognostic factor for patients with CML-CP. Study support: BMS. Writing support: Jane Cheung, Caudex, funded by BMS. Disclosures Breccia: Bristol-Myers Squibb, Celgene, Incyte, Novartis, Pfizer: Honoraria. Cortes:Bristol-Myers Squibb: Consultancy, Research Funding; Takeda: Consultancy, Research Funding; Novartis: Consultancy, Honoraria, Research Funding; Daiichi Sankyo: Consultancy, Honoraria, Research Funding; Pfizer: Consultancy, Honoraria, Research Funding; Astellas Pharma: Consultancy, Honoraria, Research Funding; Jazz Pharmaceuticals: Consultancy, Research Funding; Sun Pharma: Research Funding; Immunogen: Consultancy, Honoraria, Research Funding; Merus: Consultancy, Honoraria, Research Funding; Forma Therapeutics: Consultancy, Honoraria, Research Funding; Biopath Holdings: Consultancy, Honoraria; BiolineRx: Consultancy. Shah:Bristol-Myers Squibb: Research Funding. Saglio:Celgene: Consultancy; Jansen: Consultancy; Pfizer: Consultancy; BMS: Consultancy; Novartis: Consultancy; Ariad: Consultancy; Incyte: Consultancy. Le Coutre:Novartis: Honoraria, Speakers Bureau; Pfizer: Honoraria, Speakers Bureau; Bristol-Myers Squibb: Honoraria, Speakers Bureau; Incyte: Honoraria, Speakers Bureau. Brun:Bristol-Myers Squibb: Employment. DeGutis:Bristol-Myers Squibb: Employment, Other: Stock options. Sy:Bristol-Myers Squibb: Employment, Equity Ownership. Jabbour:AbbVie: Consultancy, Research Funding; Takeda: Consultancy, Research Funding; BMS: Consultancy, Research Funding; Adaptive: Consultancy, Research Funding; Amgen: Consultancy, Research Funding; Cyclacel LTD: Research Funding; Pfizer: Consultancy, Research Funding.


2018 ◽  
Vol 164 ◽  
pp. S224
Author(s):  
N. Kraaijpoel ◽  
N. van Es ◽  
G.E. Raskob ◽  
H.R. Büller ◽  
M. Carrier ◽  
...  

Blood ◽  
2015 ◽  
Vol 126 (23) ◽  
pp. 625-625
Author(s):  
Ryma Ihaddadene ◽  
Daniel J Corsi ◽  
Alejandro Lazo-Langner ◽  
Sudeep Shivakumar ◽  
Vicky Tagalakis ◽  
...  

Abstract Background: Venous thromboembolism (VTE) may be the earliest sign of cancer. Risk factors associated with the presence of an occult cancer in patients with a first acute unprovoked VTE are unknown. We sought to assess the risk factors predictive of occult cancer detection in patients with a first unprovoked symptomatic VTE. Methods: Post-hoc, pre-defined analyses of the multicenter open-label randomized controlled trial - Screening for Occult Malignancy in Patients with Idiopathic Venous Thromboembolism (SOME) trial (Carrier M et al. N Engl J Med 2015). The trial compared comprehensive computed tomography (cCT) of the abdomen and pelvis in addition to limited occult-cancer screening (complete history and examination, basic laboratory testing, chest radiography, and breast, cervical and prostate cancer screening) with limited occult-cancer screening alone in patients with a first unprovoked episode of VTE. Cox proportional hazard models were used to analyze the effect of specific risk factors on the outcome of occult cancer within 12 months of a diagnosis of unprovoked VTE. Multivariable analysis was performed using Cox proportional hazard models that included all variables that achieved a p value of < 0.20 in univariate analyses. Results: A total of 854 patients were randomized to limited occult cancer screening only, or limited occult cancer screening in combination with a cCT. The mean age was 54 years and 67.4% were males. A total of 33 (3.9%; 95% C.I. 2.8-5.4) patients received a new diagnosis of cancer at 12 months follow-up. Age ≥ 60 years, compared to age < 60 years, was a predictor of cancer with a corresponding hazard ratio (HR) of 2.90 (95% C.I. 1.44-5.83, p=0.003). A previous provoked VTE in patients was also associated with a higher risk of developing cancer (HR=3.57, 95% C.I. 1.38-9.25, p=0.009). Patients with an unprovoked deep vein thrombosis (DVT), compared to either those with a pulmonary embolism (PE) only or both DVT and PE, seemed more likely to have a diagnosis of cancer. However, this trend was not statistically significant. (Table 1) These results were confirmed on multivariable analysis. Patients exhibiting one of these characteristics had a three-fold higher risk of occult cancer compared with patients without these characteristics. (Table 1) Conclusion: Age at unprovoked VTE diagnosis (≥ 60 years) and prior provoked VTE are predictors of occult cancer, and could potentially be used to identify a group of patients with unprovoked VTE at high risk of underlying cancer. Table 1.Risk factors of occult malignancy among patients with a first unprovoked symptomatic VTE.Patients without cancer (%) (n = 821)Patients with cancer (%) (n = 33)Univariate analysis Hazard Ratio (95% C.I.)P valueMultivariable analysis Hazard Ratio (95% C.I.)P valueAge at diagnosis ≥ 60 years288 (35.1)20 (60.6)2.90 (1.44-5.83)0.0033.0 (1.47-5.99)0.002Male sex555 (67.6)21 (63.6)0.72 (0.35-1.46)0.358--Prior provoked VTE42 (5.1)5 (15.2)3.57 (1.38-9.25)0.0093.8 (1.46-10.03)0.006Type of current VTEDVT only444 (54.3)24 (72.7)1.91 (0.89-4.12)0.0972.1 (0.97-4.51)0.061PE only271 (33.1)7 (21.2)0.60 (0.26-1.38)0.229--DVT + PE103 (12.6)2 (6.1)0.54 (0.13-2.24)0.392--Baseline medicationsOral contraceptive pill48 (5.8)0 (0.0)----Exogenous estrogen18 (2.2)1 (3.0)1.51 (0.21-11.07)0.685--Antiplatelet agent39 (4.8)1 (3.0)0.62 (0.09-4.56)0.641--Oral anticoagulant688 (83.8)26 (78.8)0.66 (0.29-1.53)0.337--LMWH391 (47.7)15 (45.5)0.68 (0.34-1.36)0.275--VTE, venous thromboembolism; DVT, deep vein thrombosis; PE, pulmonary embolism; LMWH, low molecular weight heparin Disclosures Lazo-Langner: Pfizer: Honoraria, Other: Participated in studies funded by this organization, Speakers Bureau; LEO Pharma: Honoraria, Other: Participated in studies funded by this organization; Boehringer Ingelheim: Honoraria, Other: Participated in studies funded by this organization; Bayer: Honoraria, Other: Participated in studies funded by this organization; Daiichi-Sankyo: Other: Participated in studies funded by this organization; Novartis: Other: Participated in studies funded by this organization; Celgene: Other: Participated in studies funded by this organization; Alexion: Research Funding. Shivakumar:Bayer: Honoraria. Routhier:Sanofi-Aventis: Research Funding. Douketis:Janssen: Consultancy; Bristol-Myers Squibb: Consultancy, Honoraria; Pfizer: Honoraria; Sanofi-Aventis: Honoraria; Daiichi-Sankyo: Consultancy; Actelion: Consultancy; Biotie: Other: Advisory board; The Medicines Company: Other: Advisory board; Bayer: Consultancy; Boehringer Ingelheim: Consultancy, Honoraria. Carrier:LEO Pharma: Consultancy, Research Funding; BMS: Research Funding; Bayer: Consultancy; Pfizer: Consultancy.


Phlebologie ◽  
2017 ◽  
Vol 46 (05) ◽  
pp. 288-291
Author(s):  
P. Prandoni

SummaryOnce anticoagulation is stopped, the risk of recurrent venous thromboembolism (VTE) over years approaches 40 % of all patients with a first episode of VTE. The risk is twice as high in patients with unprovoked VTE than in those with minor (either transient or persistent) risk factors of thrombosis. Although the latest international guidelines suggest indefinite anticoagulation for most patients with a first episode of unprovoked VTE, strategies that incorporate the assessment of residual vein thrombosis and D-dimer have the potential to identify a substantial proportion of subjects in whom anticoagulation can be safely discontinued. For those patients in whom anticoagulation cannot be discontinued, new opportunities are offered by the availability of low-dose anti-Xa compounds, which have been found to possess an extremely favorable benefit/risk profile.


Blood ◽  
2019 ◽  
Vol 134 (Supplement_1) ◽  
pp. 1117-1117
Author(s):  
Wolfgang A. Miesbach ◽  
Giovanni Di Minno ◽  
Elena Santagostino ◽  
Dr. Klamroth ◽  
Inga Bayh ◽  
...  

Background: The availability of factor (F)VIII replacement products has dramatically improved life expectancy for patients with hemophilia A (HA). However, older patients face distinct challenges. Age-related comorbidities such as cardiovascular disease (CVD), often involving treatments that can increase the risk of bleeding, and patients who received treatment before the advent of recombinant products, are more likely to have been exposed to blood-borne viruses carrying chronic infections. It is important to understand clinical outcomes with FVIII products in patients with HA and these comorbidities. BAY 94-9027 (damoctocog alfa pegol; Jivi) is a B-domain deleted recombinant FVIII, site-specifically PEGylated with a 60 kDa (2×30 kDa) polyethylene glycol to extend its half-life. Efficacy and safety of BAY 94-9027 as prophylactic and on-demand therapy for patients with severe HA were demonstrated in the phase II/III PROTECT VIII trial and its Extension. This post hoc analysis assessed bleeding rates and safety outcomes for prophylaxis patients in PROTECT VIII and its Extension, based on the presence or absence of comorbidities of interest. Patients/Methods: PROTECT VIII (NCT01580293) was a partially randomized, open-label trial of 134 males aged 12-65 years with severe HA (FVIII <1%) and ≥150 FVIII exposure days. Prophylaxis patients (n=114) received BAY 94-9027 25 IU/kg twice weekly (2×W) for a 10-week run-in period. Patients with ≤1 spontaneous joint or muscle bleed during this period were randomized to 45-60 IU/kg every 5 days or 60 IU/kg every 7 days for the main 26-week study; patients enrolling after the randomization arms were full, or with ≥2 bleeds in the run-in period, received 30-40 IU/kg 2×W. Patients completing the main study could enter an extension, continuing BAY 94-9027 on any regimen used in the main study. Baseline characteristics, annualized bleeding rates (ABR) and safety were examined for patients on prophylaxis treatment during main study and its Extension with and without comorbidities of interest. Comorbidities included human immunodeficiency virus (HIV) infection, hepatitis B or C infection (HBV or HCV), and risk factors for CVD (hypertension, hypercholesterolemia, hypertriglyceridemia and hyperlipidemia). Results: A total of 104 patients who received BAY 94-9027 prophylaxis during the main study and the Extension (data cut-off: Jan 2018) were included in this analysis. Mean (SD) age of patients was 34.3 (13.0) years with a median (Q1;Q3) of 7 (2;15) bleeds in the 12 months before enrolment. Most patients (72.1%) had target joint(s) at baseline. Before study, 22 (21.2%) patients were receiving on-demand treatment; the remaining 82 were on regular prophylaxis. Most patients (n=66, 63.5%) had ≥1 comorbidity of interest. Of those, chronic HCV infection (HCV detection, asymptomatic) was most common (40/66, 60.6%), followed by acute HCV infection (HCV detection, symptomatic, 26/66, 39.4%), HBV infection (20/66, 30.3%), hypertension (17/66, 25.8%), hyperlipidemia (7/66, 10.6%), HIV infection (5/66, 7.6%), and hypertriglyceridemia (2/66, 3.0%). Patients with comorbidities of interest were older (mean age: 41.5 vs 21.9 years, respectively) and had a higher median (Q1;Q3) number of joint bleeds in the previous 12 months (5 [1;12] vs 3 [0;10], respectively) than patients without comorbidities (n=38). Pre-study, median ABR was 6.0 and 7.0 in patients with and without comorbidities of interest respectively, which decreased to 2.9 and 1.5 respectively during the main study, and further to 1.8 and 1.2 respectively during the Extension (Figure). In all patients with comorbidities of interest, robust improvements in median ABR were observed between the 12-month pre-study period and the main study period, and were maintained or improved in the Extension. Patients with comorbidities of interest had similar numbers of drug-related adverse events (AEs; 10.6% vs 23.7%), serious AEs (39.4% vs 28.9%) and discontinuations due to AEs (1.5% vs 2.6%) than those without comorbidities of interest during main study and Extension. Conclusions: The majority of patients (63.5%) in PROTECT VIII had ≥1 comorbidity of interest. The results from this post hoc analysis indicate that long-term BAY 94-9027 prophylaxis provided excellent control of bleed rates and was well tolerated in patients with severe HA and comorbidities of interest: HIV, HBV or HCV infection or risk factors for CVD. Figure Disclosures Miesbach: Biotest: Research Funding, Speakers Bureau; Sanofi: Consultancy, Honoraria; Freeline: Honoraria; Takeda: Consultancy, Honoraria, Research Funding, Speakers Bureau; Novo Nordisk: Consultancy, Honoraria, Research Funding, Speakers Bureau; Grifols: Speakers Bureau; Biomarin: Consultancy, Honoraria; LFB: Consultancy, Honoraria, Research Funding, Speakers Bureau; Sobi: Consultancy, Honoraria, Research Funding, Speakers Bureau; UniQure: Consultancy, Honoraria, Research Funding; CSL: Research Funding, Speakers Bureau; Novartis: Consultancy, Honoraria; Roche: Consultancy, Honoraria; Bayer: Research Funding, Speakers Bureau; Octapharma: Consultancy, Honoraria, Speakers Bureau; Pfizer: Consultancy, Honoraria, Research Funding, Speakers Bureau. Di Minno:Sanofi: Speakers Bureau; Bayer: Consultancy, Honoraria, Speakers Bureau; Kedrion: Speakers Bureau; CSL: Speakers Bureau; Pfizer: Speakers Bureau; Novo Nordisk: Speakers Bureau. Santagostino:Roche: Consultancy, Speakers Bureau; Octapharma: Consultancy, Speakers Bureau; Pfizer: Consultancy, Speakers Bureau; Spark: Speakers Bureau; Kedrion: Consultancy, Speakers Bureau; Bioverativ: Consultancy, Speakers Bureau; UniQure: Consultancy, Speakers Bureau; Sobi: Consultancy, Speakers Bureau; Novo Nordisk: Consultancy, Speakers Bureau; Grifols: Consultancy, Speakers Bureau; Bayer: Consultancy, Speakers Bureau; Shire: Consultancy, Speakers Bureau; CSL: Consultancy, Speakers Bureau; Sanofi: Speakers Bureau. Klamroth:Bayer, Biomarin, CSL Behring, Novo Nordisk, Octapharma, Pfizer, Roche, SOBI, Takeda: Consultancy; Bayer, Novo Nordisk, SOBI: Research Funding. Bayh:Bayer: Employment. Soto:Bayer: Employment. Hermans:LFB: Consultancy, Honoraria, Speakers Bureau; Pfizer: Consultancy, Honoraria, Speakers Bureau; Octapharma: Consultancy, Honoraria, Speakers Bureau; Bayer: Consultancy, Honoraria, Speakers Bureau; Shire: Consultancy, Honoraria, Speakers Bureau; CAF-DCF: Consultancy, Honoraria, Speakers Bureau; Novo Nordisk: Consultancy, Honoraria, Speakers Bureau; CSL: Consultancy, Honoraria, Speakers Bureau; Sobi: Consultancy, Honoraria, Speakers Bureau; Kedrion: Consultancy, Honoraria, Speakers Bureau; Roche: Consultancy, Honoraria, Speakers Bureau.


2018 ◽  
Vol 118 (07) ◽  
pp. 1270-1278 ◽  
Author(s):  
Noémie Kraaijpoel ◽  
Nick van Es ◽  
Gary Raskob ◽  
Harry Büller ◽  
Marc Carrier ◽  
...  

AbstractVenous thromboembolism (VTE) may be the first sign of an undiagnosed cancer. In patients with unprovoked VTE, the risk is approximately 5% in the year following VTE diagnosis. Cancer-specific screening is therefore often considered in these patients, but the optimal screening strategy remains controversial. Recently, two risk classification scores have been proposed that may help in identifying patients at high risk of occult cancer in whom extensive screening may be warranted. In the present post hoc analysis of the Hokusai-VTE study, we evaluated the performance of the Registro Informatizado de Pacientes con Enfermedad TromboEmbólica (RIETE) and Screening for Occult Malignancy in Patients with Idiopathic Venous Thromboembolism (SOME) scores for occult cancer in patients with acute VTE. A total of 8,032 patients were included in the analysis of whom 218 (2.7%; 95% confidence interval [CI], 2.4–3.1) developed cancer between 30-day and 12-month follow-up. The c-statistics of the RIETE and SOME scores were 0.62 (95% CI, 0.57–0.66) and 0.59 (95% CI, 0.55–0.62), respectively. In patients classified as ‘high risk’, the cumulative incidence of cancer diagnosis during follow-up was 2.9% (95% CI, 2.1–3.9) for the RIETE score and 2.7% (95% CI, 1.9–3.7) for the SOME score, corresponding to hazard ratios of 1.8 (95% CI, 1.3–2.5) and 1.5 (95% CI, 1.04–2.2), respectively. In conclusion, the performance of both scores was poor. When used dichotomously, the scores were able to identify a group of patients with a significantly higher risk of occult cancer, although it remains unknown whether this translates into improved clinical important outcomes.


2020 ◽  
Vol 40 (03) ◽  
pp. 270-279
Author(s):  
Nick van Es ◽  
Cihan Ay ◽  
Luis Jara-Palomares

AbstractA strong link between cancer and thrombosis has been well recognized. The occurrence of venous thromboembolism (VTE) can be the first clinical sign of an undiagnosed (i.e., occult) cancer. Cancer is more often diagnosed after unprovoked compared with provoked VTE events, with a reported risk in recent studies of around 5%. Extensive, imaging-based screening strategies to detect occult cancer after unprovoked VTE do not appear to have a clear clinical benefit compared with a more limited cancer screening. To identify patients with unprovoked VTE at high risk of occult cancer, risk factors have been explored and prediction models developed. Relevant risk factors for occult cancer include male sex, age, anemia, chronic lung disease, and thrombocytosis. Studies with preselection of patients based on risk assessment and evaluation of limited versus extensive screening strategies are currently ongoing. Also, novel and promising approaches for early detection of cancer in patients with unprovoked VTE by means of liquid biopsies, which include analysis of circulating tumor cells, cell-free tumor DNA, proteomics, or platelet mRNA sequencing, are currently under investigation. In this review, we provide an overview of the risk of cancer diagnosis after VTE, discuss the studies which investigated different screening strategies for occult cancer, summarize risk factors and risk scoring models for identification of patients at high risk of cancer diagnosis after VTE, and highlight ongoing research to optimize screening and identification of patients at risk of occult cancer, which will shape the future clinical practice.


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