(Updates with European, U.S. share futures)
* Chinese market extend losses after heavy sell-off on Monday
* Sell-off could impact other Asian markets - analyst
* U.S. dollar treads water as investor await tax reform vote
* Oil prices down, gold inches up
By Swati Pandey
SYDNEY, Nov 28 (Reuters) - Asian shares drifted away from decade highs on Tuesday as Chinese stocks stumbled for a second straight session, while the dollar inched higher on optimism about a tax reform in the world's biggest economy.
Investor confidence in China has been dented by rising bond yields as Beijing stepped up its crackdown on shadow banking and other risky forms of financing. Higher borrowing costs threaten to squeeze corporate profits.
The dour mood looks set to ripple across global markets with both FTSE futures and S&P E-mini futures edging lower.
Chinese shares pared some of the early losses with the CSI 300 index down 0.3 percent following a heavy sell-off on Monday. Shanghai's SSE Composite index was off 0.1 percent in volatile trading.
The CSI300 index has jumped 22 percent in 2017 so far, with the gains concentrated in a handful of large index-weighted stocks.
"The aspect of poor breadth and participation was actually the point for Chinese authorities who have been concerned with the equity market continually heading higher on very low participation," said Chris Weston, Melbourne-based chief strategist at IG Markets.
"The question is whether further downside in Chinese mainland equities continues in the session ahead and will there be a spillover into Hong Kong and potentially even Japan, Korea and Australia?"
Most of Asia was in the red, with Hong Kong's China Enterprises Index leading the losses. South Korea's KOSPI and Thailand shares managed to eke out small gains.
MSCI's broadest index of Asia-Pacific shares outside Japan skidded 0.2 percent from last week's high of 570.21 points.
The index has been on an uptrend most of this year, posting a monthly loss only once in 2017. It was on track to end November in the black.
Wall Street had been mixed on Monday, with the S&P 500 off a touch, the Nasdaq losing 0.1 percent and the Dow up 0.1 percent.
The dollar inched up on the yen to 111.20, but was still within spitting distance of a recent 2-1/2-month low, as bulls fret about potential delays in U.S. tax cuts.
The euro was steady at $1.1903, within reach of a two-month high.
The dollar got a brief boost overnight when President Donald Trump tweeted that the tax cut bill was "coming along very well".
The tweet came after a meeting with Senate Republican tax-writers on Monday ahead of a crucial vote on the Senate floor that could come as early as Thursday.
Separately, the U.S. Senate Banking Committee holds a hearing on Tuesday to confirm the nomination of Jerome Powell at the helm of the Federal Reserve. If confirmed, Powell will have to balance tightening policy against still sluggish wages and inflation.
The bond market is concerned the Fed will hike rates too far, keeping inflation too low and ultimately slowing the economy.
That has been a major force in the remarkable pace of curve flattening in recent weeks. The 2s/10s yield curve is only 58 basis points from inverting - a classic signal that recession is just around the corner.
In commodity markets, U.S. light crude was off 36 cents at $57.75, having fallen more than a dollar overnight. Brent crude slipped 38 cents to $63.60, but not far from a near 2-1/2 year peak of $64.65 touched earlier this month.
Spot gold inched lower to $1,294.12.
Reporting by Swati Pandey; Editing by Eric Meijer & Shri Navaratnam