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To evaluate the efficacy of hochuekkito combined with (CAM) for improvement in the prognosis of lung cancer.

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Evidence Reports of Kampo Treatment

Task Force for Evidence Reports / Clinical Practice Guideline Committee for EBM, the Japan Society for Oriental Medicine

990004e 2. Cancer (Condition after Cancer Surgery and Unspecified Adverse Drug Reactions of Anti-cancer Drugs)

Reference

Kato S, Kishiro I, Machida S, et al. Combined effects of hochu-ekki-to (bu-zhong-yi-qi-tang) and clarithromycin on Lung Carcinoma. Kampo to Meneki-Arerugi (Kampo and Immuno-Allergy) 1999; 13: 83-8 (in Japanese with English abstract).

1. Objectives

To evaluate the efficacy of hochuekkito (補中益気湯) combined with clarithromycin (CAM) for improvement in the prognosis of lung cancer.

2. Design

Randomized controlled trial (RCT).

3. Setting

A university hospital (Department of Internal Medicine, Dokkyo Medical University Hospital), Japan.

4. Participants

Thirty-five patients with primary lung cancer lesions that responded to chemotherapy or radiotherapy either partially or completely (21 males, 14 females; mean age, 63.2±6.7 years; performance status [P.S.] 0-2; baseline clinical stage Ia [n=5], Ib [n=21], and II [n=9]; squamous cell carcinoma [n=14], adenocarcinoma [n=21]).

5. Intervention

Arm 1: combination therapy group; 400 mg/day of CAM + 7.5 g/day of hochuekkito (補中益気湯) extract granules administered to 17 patients (10 males, 7 females; mean size reduction of the primary lesion, 62.8 ± 11.2%).

Arm 2: monotherapy group; 400 mg/day of CAM administered to 18 patients (11 males, 7 females; mean size reduction of the primary lesion, 66.7±8.6%).

6. Main outcome measures

Tumor markers, NK cell activity (at baseline, and 2 and 12 months after the start of treatment), and 1-year survival.

7. Main results

Serum levels of tumor markers were significantly elevated in both treatment groups compared with the control group. In patients surviving 1 year after the start of treatment, NK cell activity, representing immunoreactivity, was elevated in both treatment groups, and was significantly higher in the combination therapy group than the control group.

8. Conclusions

The combination (hochuekkito plus CAM) seems to be effective for maintaining the efficacy of chemotherapy and radiotherapy.

9. From Kampo medicine perspective

None.

10. Safety assessment in the article

None.

11. Abstractor’s comments

This study deserves praise for attempting to conduct RCT targeting a difficult-to-treat pathology of lung cancer prognosis. Regrettably, however, it is unclear whether “the control group” mentioned here refers to the CAM monotherapy group or yet another group, or to a before-after comparison in the same group. Clarification of the study is expected.

12. Abstractor and date

参照

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