New hope for advanced breast cancer: DB-1303 takes on T-DM1 in phase 3 trial
NCT ID NCT06265428
First seen Nov 01, 2025 · Last updated May 14, 2026 · Updated 29 times
Summary
This phase 3 study tests whether a new drug, DB-1303, works better than the current standard T-DM1 for people with HER2-positive breast cancer that has spread or cannot be removed by surgery. About 228 adults who have already tried trastuzumab and a taxane will be randomly assigned to one of the two treatments. The main goal is to see how long the cancer stays under control.
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Contacts and locations
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Locations
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001
Beijing, Beijing Municipality, 100039, China
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002
Shanghai, Shanghai Municipality, 200032, China
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003
Xi’an, Shanxi, 710061, China
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004
Nanjing, Jiangsu, 210029, China
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005
Zhengzhou, Henan, 450052, China
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006
Zhengzhou, Henan, 450003, China
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007
Chengdu, Sichuan, 610041, China
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008
Changchun, Jilin, 130021, China
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009
Wuhan, Hubei, 430079, China
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010
Beijing, Beijing Municipality, 100142, China
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011
Wuhan, Hubei, 430030, China
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012
Linyi, Shandong, 276003, China
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013
Ürümqi, Xinjiang, 830011, China
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014
Nanchang, Jiangxi, 330006, China
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015
Bengbu, Anhui, 233000, China
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016
Hefei, Anhui, 230001, China
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017
Nanning, Guangxi, 530021, China
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018
Luoyang, Henan, 471003, China
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019
Hangzhou, Zhejaing, 310022, China
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020
Haerbin, Heilongjiang, 150081, China
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021
Tianjin, Tianjin Municipality, 300060, China
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022
Nanning, Guangxi, 530021, China
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023
Guangzhou, Guangdong, 510060, China
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024
Guangzhou, Guangdong, 510080, China
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025
Hangzhou, Zhejiang, 310003, China
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026
Guangzhou, Guangdong, 510120, China
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027
Nanjing, Jiangsu, 210009, China
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028
Huizhou, Guangdong, 516001, China
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029
Hefei, Anhui, 230601, China
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030
Changsha, Hunan, 410005, China
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031
Jinan, Shandong, 250013, China
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032
Dalian, Liaoning, 116021, China
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033
Kunming, Yunnan, 650118, China
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034
Yibin, Sichuan, 644000, China
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035
Taiyuan, Shanxi, 030013, China
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036
Fuzhou, Fujian, 350014, China
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037
Xiamen, Fujian, 361003, China
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038
Jilin, Changchun, 130022, China
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039
Yantai, Shandong, 264001, China
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040
Binzhou, Shandong, 256603, China
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041
Neijiang, Sichuan, 641100, China
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042
Hangzhou, Zhejiang, 310016, China
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043
Haikou, Hainan, 570102, China
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044
Xuzhou, Jiangsu, 221006, China
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045
Baoding, Hebei, 071000, China
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046
Shanghai, Shanghai Municipality, 200120, China
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047
Jinan, Shandong, 250117, China
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048
Shijiazhuang, Hebei, 050011, China
Conditions
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