The dollar maintained a slim gain against the euro and traded at 10-month highs against the yen on Wednesday ahead of what's expected to be a ninth U.S. interest-rate hike announced Thursday. The currency market showed little response to a report that showed first-quarter U.S. gross domestic product increased at a 3.8% annual rate, matching the growth rate in the fourth quarter. The report wasn't seen changing the near-term interest-rate outlook. The dollar was fetching 110.35 yen compared to 110.39 yen before the report. That's a gain of 0.5% from Tuesday. The euro stood at $1.2055 vs. $1.2052 before the data release, down 0.1% from Tuesday. On Tuesday, the Conference Board's U.S. consumer confidence index rose to a three-year high of 105.8 in June, the research group said.