BCa	Bladder cancer;
T2DM	Type 2 diabetes mellitus;
PLEKHS1	Pleckstrin homology domain containing S1;
IGF	Insulin-like growth factor;
NMIBC	Non-muscle invasive bladder cancer;
MIBC	Muscle invasive bladder cancer;
IGF-I	Insulin-like growth factor I;
IGF-II	Insulin-like growth factor II;
IGF1R	Insulin-like growth factor 1 receptor;
IGF2R	Insulin-like growth factor 2 receptor;
IGFBP	Insulin-like growth factor binding protein;
IR	Insulin receptor;
ALS	Acid labile sub-unit;
RR	Risk Ratio;
CI	Confidence Interval;
OR	Odds Ratio;
P	p-value;
I²	Measure of heterogeneity;
HR	Hazard Ratio;
BMI	Body mass index;