Table A1.

Search strategies with appropriate key words and MeSH terms.

Database	Strategy
PubMed/Medline	(“Kaempferol” OR “3,5,7-trihydroxy-2-(4-hydroxyphenyl)-4H-1-benzopyran-4-one” [Title/Abstract]) (“Kaempferol” OR “3,5,7-trihydroxy-2-(4-hydroxyphenyl)-4H-1-benzopyran-4-one”[Title/Abstract]) AND “Cancer”[Title/Abstract]) (“Kaempferol” OR “3,5,7-trihydroxy-2-(4-hydroxyphenyl)-4H-1-benzopyran-4-one”[Title/Abstract]) AND (“cell lines”[Title/Abstract] OR “cancer cell lines”[Title/Abstract] OR “neoplastic cell lines”[Title/Abstract] OR “malignancy”[Title/Abstract]) (“Kaempferol” OR “3,5,7-trihydroxy-2-(4-hydroxyphenyl)-4H-1-benzopyran-4-one”[Title/Abstract]) AND (“cell lines”[Title/Abstract] OR “cancer cell lines”[Title/Abstract] OR “neoplastic cell lines”[Title/Abstract] OR “malignancy”[Title/Abstract]) AND “Treatment”[Title/Abstract])
Science Direct	“Kaempferol” OR “3,5,7-trihydroxy-2-(4-hydroxyphenyl)-4H-1-benzopyran-4-one” “Kaempferol” OR “3,5,7-trihydroxy-2-(4-hydroxyphenyl)-4H-1-benzopyran-4-one” AND “cell lines” OR “cancer cell lines” OR “neoplastic cell lines” OR “malignancy” “Kaempferol” OR “3,5,7-trihydroxy-2-(4-hydroxyphenyl)-4H-1-benzopyran-4-one” AND “cell lines” OR “cancer cell lines” OR “neoplastic cell lines” OR “malignancy” AND “Treatment”
Scopus	TITLE-ABS-KEY((“Kaempferol” OR “3,5,7-trihydroxy-2-(4-hydroxyphenyl)-4H-1-benzopyran-4-one”)) TITLE-ABS-KEY((“Kaempferol” OR “3,5,7-trihydroxy-2-(4-hydroxyphenyl)-4H-1-benzopyran-4-one”) AND (“cell lines” OR “cancer cell lines” OR “neoplastic cell lines” OR “malignancy”)) TITLE-ABS-KEY((“Kaempferol” OR “3,5,7-trihydroxy-2-(4-hydroxyphenyl)-4H-1-benzopyran-4-one”) AND (“cell lines” OR “cancer cell lines” OR “neoplastic cell lines” OR “malignancy”) AND (“Treatment”))
EMBASE	(‘Kaempferol’ OR ‘3,5,7-trihydroxy-2-(4-hydroxyphenyl)-4H-1-benzopyran-4-one’) AND [embase]/lim NOT ([embase]/lim AND [medline]/lim) (‘Kaempferol’ OR ‘3,5,7-trihydroxy-2-(4-hydroxyphenyl)-4H-1-benzopyran-4-one’) AND (‘cell lines’ OR ‘cancer cell lines’ OR ‘neoplastic cell lines’ OR ‘malignancy’) AND [embase]/lim NOT ([embase]/lim AND [medline]/lim) (‘Kaempferol’ OR ‘3,5,7-trihydroxy-2-(4-hydroxyphenyl)-4H-1-benzopyran-4-one’) AND (‘cell lines’ OR ‘cancer cell lines’ OR ‘neoplastic cell lines’ OR ‘malignancy’) AND (‘Treatment’) AND [embase]/lim NOT ([embase]/lim AND [medline]/lim)
Cochrane Collaboration Library	“Kaempferol” OR “3,5,7-trihydroxy-2-(4-hydroxyphenyl)-4H-1-benzopyran-4-one” “Kaempferol” OR “3,5,7-trihydroxy-2-(4-hydroxyphenyl)-4H-1-benzopyran-4-one” AND “cell lines” OR “cancer cell lines” OR “neoplastic cell lines” OR “malignancy” “Kaempferol” OR “3,5,7-trihydroxy-2-(4-hydroxyphenyl)-4H-1-benzopyran-4-one” AND “cell lines” OR “cancer cell lines” OR “neoplastic cell lines” OR “malignancy” AND “Treatment”
Google Scholar	“Kaempferol” OR “3,5,7-trihydroxy-2-(4-hydroxyphenyl)-4H-1-benzopyran-4-one” “Kaempferol” OR “3,5,7-trihydroxy-2-(4-hydroxyphenyl)-4H-1-benzopyran-4-one” AND “cell lines” OR “cancer cell lines” OR “neoplastic cell lines” OR “malignancy” “Kaempferol” OR “3,5,7-trihydroxy-2-(4-hydroxyphenyl)-4H-1-benzopyran-4-one” AND “cell lines” OR “cancer cell lines” OR “neoplastic cell lines” OR “malignancy” AND “Treatment”.