(Adds comments, update stock prices)

TOKYO, April 11 (Reuters) - Japan's Nikkei share average

slumped nearly 5% on Friday in a brutal end to a volatile week

as investors worried about the economic fallout from the rapidly

escalating U.S.-China trade war as well as a strong yen that has

been lifted by safe-haven flows.

As of GMT, the Nikkei was down 4.8% at 32,931.30.

The broader Topix slipped 4.7% to 2,419.67.

"Risk in equities is too high right now with such huge

volatilities every day. The best thing to do, I would say, is to

stay away from the market," said Yusuke Sakai, a senior trader

at T&D Asset Management.

The Nikkei posted a 9% jump on Thursday, its biggest one-day

gain since August, after falling 4% in the previous session. On

Tuesday, the index rebounded 6% from a 1-1/2-year low on Monday.

"Equities rise as long as companies grow, but I am afraid

that they may not be able to disclose their outlook, and even if

they do, it could be conservative. That may push the Nikkei to a

new low," said Sakai.

Japanese companies will start announcing their outlook for

this fiscal year from the end of this month.

All three major U.S. stock indexes suffered steep losses

overnight, forfeiting much of the previous session's gains as

growing concerns over the escalating Washington-Beijing trade

face-off dampened optimism over upbeat economic data and

U.S.-Europe trade negotiations.

The dollar slumped 1% to 142.88 yen to its lowest since

September 30 on safe-haven bets.

A stronger Japanese currency tends to hurt shares of

exporters, as it decreases the value of overseas profits in yen

terms when firms repatriate them to Japan.

Uniqlo-brand owner Fast Retailing ( FRCOF ) lost 3.29% to

drag the Nikkei the most. Chip-related stocks Tokyo Electron ( TOELF )

and Advantest ( ADTTF ) slipped 2.8% and 8%,

respectively.

Of the 225 Nikkei components, all but three stocks fell.

Baycurrent ( BYCRF ) jumped 7.7% after the consulting firm

raised its annual net profit forecast and announced a share

buyback.