An appeals tribunal has dismissed doping allegations against Jamaican sprinter Sheri-Ann Brooks, upholding a decision issued by a disciplinary panel last month. Judge Ransford Langrin, chairman of the Anti-Doping Appeals Tribunal, said Thursday that he agreed with the panel's decision to clear Brooks because her ´B' sample was tested without her knowledge. Jamaica's Anti-Doping Commission had disagreed with the panel's finding and asked that the tribunal review her case, as well as those of four other athletes accused of using a banned substance at the national championships in June. The tribunal expects to issue sanctions against Yohan Blake, Allodin Fothergill, Lansford Spence and Marvin Anderson on Sept. 14. The sanctions could range from a warning to a two-year suspension. The runners were kept out of the world championships last month as a precautionary measure until a ruling was issued. The tribunal's rulings will be reviewed by the International Association of Athletics Federations, track and field's governing body and organizer of the worlds. The International Association of Athletics Federations (IAAF) can challenge any judgments in the Court of Arbitration for Sport, world sport's highest court of appeal, based in Lausanne, Switzerland. The International Association of Athletics Federations can also provisionally suspend athletes until the CAS delivers a verdict. Jamaica's Anti-Doping Commission maintains that the athletes tested positive for methylhexanamine, which is similar in chemical structure to a stimulant banned by the World Anti