The meeting of the German Society of Human Genetics (gfh) was held in Weimar, Germany this week and of course the attendees had the opportunity to visit the joined booth of MetaSystems and MetaSystems Probes. Main topics of the exhibition have been the latest advancements of the Neon case and imaging platform and RapidHyb, the revolutionary fast hybridization times of MetaSystems Probes' FISH probes.
- Order Number
- Package Size
- 100 µl (10 Tests)
The XL del(7)(q22q31) locus-specific probe detects deletions in the long arm of chromosome 7. The orange labeled probe hybridizes to a specific region at 7q22 including the KMT2E (formerly MLL5) gene. The green labeled probe hybridizes specifically to 7q31 and includes the MET proto-oncogene. A blue (aqua) labeled probe which hybridizes to the centromere of chromosome 7 functions as a reference probe.
The myelodysplastic syndromes and myeloproliferative disorders are associated with deregulated production of myeloid cells. According to WHO classification (2008) cytogenetic aberrations are observed in about 50 % of MDS cases. The most common aberrations are 5q-, 7/7q-, trisomy 8, del(20q), and inv(3) or t(3;3).
Partial or complete deletion of chromosome 7 is a common finding in MDS and AML. At least three distinct regions of common deletions have been identified: the band 7q22 and the more telomeric regions 7q31-32 and 7q36. In most studies monosomy 7/del 7q indicates as an isolated abnormality a significantly worse prognosis.
- Myelodysplastic Syndrome (MDS)
- Acute Myelogenous Leukemia (AML)
Two green (2G), two orange (2O), and two blue (2B) signals.
Aberrant Cell (typical results):
Two green (2G), one orange (1O), and 2 blue (2B) signals indicating the deletion of a 7q22 locus or one green (1G), two orange (2O), and 2 blue (2B) signals, indicating the deletion of a 7q31 locus.
Aberrant Cell (typical results): One green (1G), one orange (1O), and two blue (2B) signals indicating the deletion of a 7q22 locus and of a 7q31 locus.
Aberrant Cell (typical results): One green (1G), one orange (1O), and one blue (1B) signal indicating a monosomy 7.
- LeBeau et al (1996) Blood 88:1930-1935
- Liang et al (1998) Proc Natl Acad Sci USA 95:3781-3785
- Haase D (2008) Ann Hematol 87:515-526