Table 1.

Queries Used in Medline, Embase and Scopus

Database	Search terms
MEDLINE	("cancer"[Mesh] OR "tumor"[tiab] OR "malignancy"[tiab] OR "neoplasm"[tiab] OR " adenocarcinoma"[tiab] AND ("long noncoding RNA"[MeSH Terms] OR "long non-coding RNA"[tiab] OR "Long non-coding RNA"[tiab] OR "Long noncoding RNAs"[tiab] OR " Long noncoding lncRNA"[tiab] OR " Long noncoding lncRNAs"[tiab] OR "long noncoding lncRNAs "[tiab] OR " long noncoding lncRNAs "[tiab] AND ("Prostate cancer-associated lncRNA transcripts 1"[MeSH Terms] OR "Prostate cancer-associated lncRNA transcripts 1"[tiab] OR "PCAT-1"[tiab] OR "PCAT1"[tiab] OR "plasma"[tiab] OR "serum"[tiab] OR "circulating long noncoding lncRNA "[tiab] OR " blood stream"[tiab])
EMBASE	1- exp" cancer"/ or ("tumor" OR "malignancy" OR "neoplasm "[tiab] OR "adenocarcinoma").ti,ab.
	2- exp oncoding lncRNA" OR "Long non-coding lncRNAs" OR " Long noncoding lncRNA" OR " Long noncoding lncRNAs" OR " long noncoding lncRNA "AND "Prostate cancer-associated lncRNA transcripts 1"/ or "PCAT1" OR "PCAT-1" OR "plasma" OR "serum" OR " long noncoding lncRNA " OR "blood stream").ti,ab.
	3- 1 & 2
SCOPUS	((TITLE-ABS-KEY (cancer) OR TITLE-ABS-KEY (adenocarcinoma) OR TITLE-ABS-KEY (malignany) OR TITLE-ABS-KEY (neoplasm) OR TITLE-ABS-KEY (plasma)))
	AND ((TITLE-ABS-KEY (Prostate cancer-associated lncRNA transcripts 1) OR TITLE-ABS-KEY (PCAT-1) OR TITLE-ABS-KEY (PCAT1) AND((TITLE-ABS-KEY (serum) OR TITLE-ABS-KEY (blood stream) OR TITLE-ABS-KEY (plasma) OR TITLE-ABS-KEY (circulating) OR TITLE-ABS-KEY (lnc RNA) OR TITLE-ABS-KEY (cancer) OR TITLE-ABS-KEY (circulating lnc RNA) OR TITLE-ABS-KEY (plasma lncRNA) OR TITLE-ABS-KEY (circulation OR TITLE-ABS-KEY (circulating long noncoding RNA) OR TITLE-ABS-KEY (Long noncoding RNA)