XL MYCN amp consists of a green-labeled probe hybridizing to the MYCN gene region at 2p24 and an orange-labeled probe hybridizing to the NMI gene region at 2q23.

Probe maps are created in accordance with the intended purpose of the product. Solid colored bars do not necessarily indicate that the probe fully covers the indicated genomic region. Therefore, caution is advised when interpreting results generated through off-label use. Probe map details based on UCSC Genome Browser GRCh37/hg19. Map components not to scale. Further information is available on request.

The MYCN gene is a member of the MYC transcription factor family consisting of c-MYC, MYCN and MYCL. It is crucial for embryonic development, especially in the nervous system. The expression is tightly regulated in a spatial and timely manner and high levels are found in the developing brain, retina, neuroepithelial cells, lung and kidney. MYCN expression is associated with the maintenance of self-renewal capacity and the pluripotent status of stem cells. Dysregulation of MYCN contributes to the development of different kinds of childhood tumors including neuroblastoma, medulloblastoma, rhabdomyosarcoma and Wilms tumor. MYCN is also involved in the development of some adulthood neoplasms such as prostate and lung cancer.
Neuroblastoma is the most common extracranial solid tumor in infants. About 6% of all cancers in children are caused by neuroblastomas and 20-25% of neuroblastoma patients are showing an amplification of the MYCN gene. MYCN amplification is an important prognostic marker for risk stratification in neuroblastoma. Generally, patients with MYCN amplification have a poor prognosis. FISH is a valuable tool for the analysis of the MYCN amplification status. It detects MYCN amplification on single-cell level and allows the correlation with morphological cell features.

Clinical Applications

• Solid Tumors (Solid Tumors)

XL MYCN amp hybridized to neuroblastoma tissue. Amplification of MYCN is indicated by multiple copies of the green signal.

• Theissen et al (2009) Clin Cancer Res 15:2085-2090
• Huang and Weiss (2013) Cold Spring Harb Perspect Med 2013;3(10):a014415
• Ruiz-Pérez et al (2017) Genes 8(4):113

• Utility and performance of bacterial artificial chromosomes-on-beads assays in chromosome analysis of clinical prenatal samples, products of conception and blood samples.
• A child with multiple congenital anomalies due to partial trisomy 7q22.1 → qter resulting from a maternally inherited balanced translocation: a case report and review of literature.
• Distinct roles of ATM and ATR in the regulation of ARP8 phosphorylation to prevent chromosome translocations.
• Heterogeneous MYCN amplification in neuroblastoma: a SIOP Europe Neuroblastoma Study.
• Immense random colocalization, revealed by automated high content image cytometry, seriously questions FISH as gold standard for detecting EML4-ALK fusion.
• Fluorescence in situ hybridisation assays designed for del(7q) detection uncover more complex rearrangements in myeloid leukaemia cell lines
• Detection of t(7;12)(q36;p13) in paediatric leukaemia using dual colour fluorescence in situ hybridisation.
• A rare case of t(11;22) in a mantle cell lymphoma like B-cell neoplasiaresulting in a fusion of IGL and CCND1: case report.
• Genomic DNA-chip hybridization in t(11;14)-positive mantle cell lymphomas shows a high frequency of aberrations and allows a refined characterization of consensus regions.