OPINION OF THE COURT

Yun Bin Bian, a native and citizen of China, entered the United States in February 2004 as an arriving alien without a valid passport or immigrant visa. He was denied admission, and the Department of Homeland Security (“DHS”) issued him a notice to appear. At his removal hearing, Bian conceded removability, but applied for asylum, withholding of removal, and relief under the Convention Against Torture.1 An Immigration Judge (“IJ”) denied relief, finding that Bian’s claim was “totally fabricated and that [he] is simply claiming that he was persecuted in the past, and he fears persecution in the future upon a protected ground in an effort to remain in the United States.” The Board of Immigration Appeals (“BIA”) affirmed in a per curiam opinion in which it upheld the IJ’s negative credibility finding. We have jurisdiction under 8 U.S.C. § 1252, and we will deny the petition.

Bian argues that (1) the IJ erroneously concluded that he lacked credibility, and (2) he established both past persecution and a well-founded fear of future persecution. We review an IJ’s negative credibility assessment for substantial evidence. Mulanga v. Ashcroft, 349 F.3d 123, 131 (3d Cir. 2003). Whether an asylum applicant has demonstrated past persecution or a well-founded fear of future persecution is a factual question, which we also review for substantial evidence. Id.

The IJ’s conclusion that Bian was not credible is supported by substantial evidence. The record reflects numerous material inconsistent statements provided by Bian under oath. During his airport interview,2 he stated that he was a driver employed by Fuzhou City Transportation Corporation, that he had never been arrested, and that his girlfriend, with whom he already had one child, was pregnant with a second child. During a subsequent credible fear interview conducted by DHS officials, Bian reaffirmed these facts. However, in his asylum application, he indicated that he had been unemployed3 from August 1998 to the present date, that he had no children, and that he had been *127arrested in August 2003 after police disrupted a youth learning class he was hosting.

The most material inconsistency Bian provided is the basis for his asylum claim. During his credible fear interview, he stated that he feared that he would be arrested and forcibly sterilized if he returned to China because Chinese family planning officials discovered his girlfriend’s pregnancy, had her arrested, and forced her to have an abortion. In his asylum application, Bian made no mention of forced sterilization, but rather, for the first time, claimed that he feared he would face future persecution on account of his Roman Catholic religion and his involvement in an underground Catholic church.

Bian justified the inconsistent statements by providing a myriad of explanations. With respect to the inconsistency in his reasons for seeking asylum, Bian testified that a smuggler told him to mention only birth control matters when asked why he fled China. He also explained that he gave inconsistent answers to the questions about prior arrests because he believed he would have been sent back to China if he admitted his arrest. However, the IJ reasonably relied on these inconsistencies and lack of credible corroborating evidence4 in concluding that Bian was not credible and had “simply fabricated his claim.” Chen, 376 F.3d at 224. This determination is amply supported by substantial evidence.

Because we find that the adverse credibility determination is supported by substantial evidence, we find it unnecessary to address Bian’s argument that he established past persecution or a well-founded fear of future persecution. See Dia v. Ashcroft, 353 F.3d 228, 247 (3d Cir. 2003) (en banc).