A 13-year-old leukemia victim who was denied the possibility of a bone marrow transplant from his 3-year-old half-siblings died without a fair chance against the disease or the courts, his father says.

Jean-Pierre Bosze died Monday at his suburban Hoffman Estates home, ending his father's six-month legal battle to have the teenager's twin half-siblings, a boy and a girl, tested as donors for a bone marrow transplant that doctors said might have saved his life."He was a very, very brave boy," said his father, Tamas Bosze. "It's very unfortunate the way the law is now. I don't think he had a fair chance."

Bosze had sought a court order to force Nancy Curran - his former girlfriend and the mother of the twins - to have the toddlers tested.

Curran had claimed the tests would be too painful and risky. In September, the state Supreme Court affirmed a lower court's ruling in her favor. A request to reconsider its decision was before the high court when Jean-Pierre died.

The boy was released from Lutheran General Hospital in Park Ridge last week, and both his mother and father were at his bedside when he died, said Edward Jordan, Bosze's lawyer.

"He was at peace," Jordan said. "He was as calm as he could be. He didn't want to die. But he knew it was coming."

Jordan said Bosze feels no bitterness toward Curran.

"It's not anything like `You killed my kid,' nothing like that," Jordan said.