Investors are looking to the outcome of the Federal Reserve's rates review later in the day, with expectations policymakers will reinforce their recent dovish stance given signs of a slowdown in the U.S. economy.

The 10-year JGB futures stood flat at 152.64, with a trading volume of 15,041 lots, by late afternoon trade.

The benchmark 10-year cash JGB yield was half a basis point higher on the day at 0.005 percent.

The super-long sector followed suit, with the 20-year yield  inching up 0.5 basis point to 0.460 percent, while the 30-year and 40-year yields  rising 1 basis point each to 0.660 percent and 0.750 percent, respectively.

U.S. Treasury yields fell on Tuesday, with the 10-year yield  dropping to 2.710 percent and the two-year yield , which reflects market expectations of rate hikes, declining to 2.57 percent, respectively.

The Federal Open Market Committee will release a policy statement at 2 p.m. EST (1900 GMT) on Wednesday and hold a news conference starting at 2:30 p.m. EST (1930 GMT).