The Israeli Chamber Project, set to open the concert season at Music at Kohl Mansion, plans to perform as scheduled, but with a different program and a somewhat different lineup of musicians after the latest war between Israel and Hamas prevented some performers from traveling.

Fighting has continued unabated since the incursion into Israel on Saturday, Oct. 7, by members of Hamas. More than 2,300 people have been killed in Israel and Gaza, according to the Associated Press.

Of the five instrumentalists slated to appear at the Burlingame venue on Oct. 22, three remain at home with their families, according to a statement from pianist Assaff Weisman, the group’s executive director.

“The start of a chamber music concert season is a joyous and festive occasion that celebrates creativity, imagination and community. Our ensemble, however, finds itself with heavy hearts as our country is under attack and at war,” Weisman said. “While all of our musicians are safe, several of them are unable to travel to San Francisco due to the current security situation, needing to stay with their families at this time of national grief.”

Weisman and violinist Carmit Zori were already in the U.S. at the outbreak of hostilities and are expected to appear as planned, joined by American clarinetist Charles Neidich.

The other ensemble members — violist Guy Ben-Ziony, cellist Michal Korman and clarinetist Tibi Cziger — are unable to leave Israel.

In place of the originally scheduled program, the three musicians will perform music by the 20th-century Israeli composer Paul Ben-Haim, as well as works by Khachaturian, Bartók, Dvorák and Gershwin.

Reach Joshua Kosman:jkosman@sfchronicle.com