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Observational Study
. 2023 Jan;28(1):69-78.
doi: 10.1007/s10147-022-02257-y. Epub 2022 Nov 10.

Identification of risk factors for venous thromboembolism and validation of the Khorana score in patients with advanced lung cancer: based on the multicenter, prospective Rising-VTE/NEJ037 study data

Affiliations
Observational Study

Identification of risk factors for venous thromboembolism and validation of the Khorana score in patients with advanced lung cancer: based on the multicenter, prospective Rising-VTE/NEJ037 study data

Yukari Tsubata et al. Int J Clin Oncol. 2023 Jan.

Abstract

Background: Management of cancer-associated venous thromboembolism (VTE) is essential in cancer treatment selection and prognosis. However, currently, no method exists for assessing VTE risk associated with advanced lung cancer. Therefore, we assessed VTE risk, including driver gene mutation, in advanced lung cancer and performed a Khorana score validation.

Methods: The Rising-VTE/NEJ037 study was a multicenter prospective observational study that included patients with advanced lung cancer. In the Rising-VTE/NEJ037 study, the Khorana score was calculated for enrolled patients with available data on all Khorana score components. The modified Khorana score was based on the body mass index of ≥ 25 kg/m2, according to the Japanese obesity standard. A multivariate logistic regression analysis, including patient background characteristics, was performed to evaluate the presence of VTE 2 years after the lung cancer diagnosis.

Results: This study included 1008 patients with lung cancer, of whom 100 (9.9%) developed VTE. From the receiver operating characteristic curve analysis, VTE risk could not be determined because both the Khorana score (0.518) and modified Khorana score (0.516) showed very low areas under the curve. The risk factors for VTE in the multivariate analysis included female sex, adenocarcinoma, performance status, N factor, lymphocyte count, platelet count, prothrombin fragment 1 + 2 and diastolic blood pressure.

Conclusion: The Khorana score, which is widely used in cancer-VTE risk assessment, was less useful for Japanese patients with advanced lung cancer. Prothrombin fragment 1 + 2, a serum marker involved in coagulation, was more suitable for risk identification.

Clinical trial information: jRCTs061180025.

Keywords: Deep vein thrombosis; Khorana score; Lung cancer; Prothrombin fragment 1 + 2; Pulmonary thromboembolism.

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Conflict of interest statement

Yukari Tsubata received grant and personal fees from Daiichi Sankyo Co., Ltd. and AstraZeneca K.K. and personal fees from Chugai Pharmaceuticals Inc. outside the submitted work. Naoki Furuya received personal fees from AstraZeneca K.K., Chugai Pharmaceutical, Nippon Boehringer Ingelheim Co., Ltd., Bristol-Myers Squibb Company, Eli Lilly Japan K.K., MSD K.K., Pfizer Japan Inc. Taiho Pharmaceutical, and Novartis Pharma K.K. outside the submitted work. Toshihide Yokoyama received personal fees from Eli Lilly Japan K.K., Merck Sharp & Dohme K.K., Takeda Pharmaceutical outside the submitted work. Atsushi Nakamura received grant and personal fees from AstraZeneca K.K., Thermo Fisher Scientific, Inc., Chugai Pharmaceutical Co., Ltd., Eli Lilly Japan K.K., Novartis Pharma K.K., Pfizer Japan Inc., Nippon Boehringer Ingelheim Co., Ltd., and personal fees from Taiho Pharmaceutical Co., Ltd., outside the submitted work. Takeshi Masuda received personal fees from AstraZeneca K.K., Chugai Pharmaceutical Co., Ltd., Taiho Pharmaceutical Co., Ltd., Eli Lilly Japan, Nippon Boehringer Ingelheim Co., Ltd., Kyowa Kirin Co., Ltd., Ono Pharmaceutical Co., Ltd., outside the submitted work. Kazunori Fujitaka received personal fees from AstraZeneca K.K., Chugai Pharmaceutical Co., Ltd., Bristol-Myers Squibb Company, MSD K.K., Pfizer Japan Inc., Daiichi Sankyo Co., Ltd., Eli Lilly Japan, and Nippon Boehringer Ingelheim Co., Ltd. outside the submitted work. Kunihiko Kobayashi received personal fees from AstraZeneca K.K., Takeda Pharmaceutical outside the submitted work. Takeshi Isobe received grant and personal fees from Daiichi Sankyo Co., Ltd., personal fees from AstraZeneca K.K., Pfizer Japan Inc., and Nippon Boehringer Ingelheim Co., Ltd., and grants from Pearl Therapeutics Inc. and Janssen Pharmaceutical K.K. outside the submitted work.

Figures

Fig. 1
Fig. 1
Evaluation of the discriminating ability of Khorana score for venous thromboembolism (receiver operating characteristic curve). AUC area under the curve, CI confidence interval
Fig. 2
Fig. 2
Evaluation of the discriminating ability of modified Khorana score for venous thromboembolism (receiver operating characteristic curve). AUC area under the curve, CI confidence interval

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