BERLIN (AP) — A court in Germany has rejected appeals by two members of a spiritual group convicted of child neglect for failing to properly care for a boy with cystic fibrosis.

The genetic disorder causes lung infections and is incurable, but can be managed with medication, physiotherapy and a special diet.

Gerhard Lebok, described as the "guru of Lonnerstadt," and his partner, Susanne B., had stopped her son's treatment in 1999, when he was 12. They told him he would be cured by fasting and meditation.

The Federal Court of Justice said Tuesday that the boy was weeks from death by the time he fled to his father in 2002.

It confirmed a lower court's ruling that had sentenced the couple to three years in prison for knowingly neglecting a child.