May 6 (Reuters) - Dubai's stock market led gains across most Gulf stock markets on Wednesday after a report that the White House believes it is close to an agreement on a memorandum to end the trade war with Iran, while a drop in oil prices weighed on Saudi Arabia's index.

The Axios news website reported that the United States expects Iranian responses on several key points within the next 48 hours. A Pakistani source involved in the peace efforts confirmed this report to Reuters on Wednesday.

Joseph Daherieh, managing director at TechMill, said, "The GCC markets have rebounded as sentiment has improved amid calmer conditions in the region and more reassuring statements from US officials."

He added, "In the UAE, reaching an agreement could help the country expand its ambitions to increase oil production and exports, which could help support the local stock markets in the long term."

Dubai's index rose 3 percent, buoyed by broad gains and rebounding from losses incurred in the previous session. Shares of leading real estate developer Emaar climbed 4.4 percent, while shares of Emirates NBD, Dubai's largest bank, advanced 3.5 percent.

The Abu Dhabi index rose 0.9 percent, with most listed stocks advancing. Healthcare, real estate, and technology stocks led the gains.

Shares in Aldar Properties rose 3 percent, while shares in Alpha Abu Dhabi climbed 2.5 percent after the group announced an 82 percent increase in first-quarter net profit.

The chief executive of exploration, development and production at Abu Dhabi National Oil Company (ADNOC) said the company expects to make a final investment decision this year on the unconventional gas project with Total Energies, adding that this is expected to be followed soon by approval of a separate unconventional oil project.

Shares in all four listed ADNOC subsidiaries rose. ADNOC Logistics & Services gained 2.2 percent, ADNOC Gas rose 2.1 percent, ADNOC Distribution gained 1.9 percent, and ADNOC Drilling climbed 1.6 percent.

In Qatar, the index rose 1.4 percent, with most stocks advancing. Shares of Industries Qatar climbed 3.2 percent and Qatar National Bank shares rose 1.7 percent.

Saudi Arabia's main index fell 0.4 percent, weighed down by declines in the energy, utilities, and telecommunications sectors. Shares of oil giant Saudi Aramco dropped 2.8 percent, while shares of Saudi Basic Industries Corp. (SABIC) lost 2.1 percent.

Meanwhile, oil continued its decline today, falling to its lowest level in two weeks, with Brent crude down 8.3 percent to $100.79 a barrel by 12:05 GMT.

Kuwait's index rose 0.4 percent, Bahrain's index climbed 0.3 percent, and Oman's index fell 0.7 percent.

Outside the Gulf region, Egypt's blue-chip index rose 2 percent to a new record high of 53,605 points, with most stocks advancing. Shares of Commercial International Bank climbed 2.5 percent, while shares of Fawry, a banking technology and electronic payments company, rose 4.4 percent.