A Genome-Wide Scan Identifies Variants in NFIB Associated with Metastasis in Patients with Osteosarcoma.

Author(s): Mirabello L,  Koster R,  Moriarity BS,  Spector LG,  Meltzer PS,  Gary J,  Machiela MJ,  Pankratz N,  Panagiotou OA,  Largaespada D,  Wang Z,  Gastier-Foster JM,  Gorlick R,  Khanna C,  de Toledo SR,  Petrilli AS,  Patiño-Garcia A,  Sierrasesúmaga L,  Lecanda F,  Andrulis IL,  Wunder JS,  Gokgoz N,  Serra M,  Hattinger C,  Picci P,  Scotlandi K,  Flanagan AM,  Tirabosco R,  Amary MF,  Halai D,  Ballinger ML,  Thomas DM,  Davis S,  Barkauskas DA,  Marina N,  Helman L,  Otto GM,  Becklin KL,  Wolf NK,  Weg MT,  Tucker M,  Wacholder S,  Fraumeni JF Jr,  Caporaso NE,  Boland JF,  Hicks BD,  Vogt A,  Burdett L,  Yeager M,  Hoover RN,  Chanock SJ,  Savage SA

Journal: Cancer Discov

Date: 2015 Sep

Major Program(s) or Research Group(s): PLCO

PubMed ID: 26084801

PMC ID: PMC4560660

Abstract: UNLABELLED: Metastasis is the leading cause of death in patients with osteosarcoma, the most common pediatric bone malignancy. We conducted a multistage genome-wide association study of osteosarcoma metastasis at diagnosis in 935 osteosarcoma patients to determine whether germline genetic variation contributes to risk of metastasis. We identified an SNP, rs7034162, in NFIB significantly associated with metastasis in European osteosarcoma cases, as well as in cases of African and Brazilian ancestry (meta-analysis of all cases: P = 1.2 × 10(-9); OR, 2.43; 95% confidence interval, 1.83-3.24). The risk allele was significantly associated with lowered NFIB expression, which led to increased osteosarcoma cell migration, proliferation, and colony formation. In addition, a transposon screen in mice identified a significant proportion of osteosarcomas harboring inactivating insertions in Nfib and with lowered NFIB expression. These data suggest that germline genetic variation at rs7034162 is important in osteosarcoma metastasis and that NFIB is an osteosarcoma metastasis susceptibility gene. SIGNIFICANCE: Metastasis at diagnosis in osteosarcoma is the leading cause of death in these patients. Here we show data that are supportive for the NFIB locus as associated with metastatic potential in osteosarcoma.