Products

Product Description

ROS1 Split CISH Probe is designed for the qualitative detection of human ROS1 gene at 6q22.1 in formalin-fixed, paraffin-embedded specimens by chromogenic in situ hybridization (CISH).

Reactivity

Human

Recommend Usage

The product is ready-to-use. No reconstitution, mixing, or dilution is required. Bring probe to room temperature (18-25°C) and mix briefly before use.

Supplied Product

Reagent Provided:

1. Digoxigenin-labeled polynucleotides targeting sequences mapping in 6q22.1* (chr6:117,448,964-117,627,255) proximal to the ROS1 breakpoint region
2. Dinitrophenyl-labeled polynucleotides targeting sequences mapping in 6q22.1* (chr6:117,659,135-117,871,701) distal to the ROS1 breakpoint region
3. Formamide based hybridization buffer

*according to Human Genome Assembly GRCh37/hg19

Probe Position

Regulatory Status

For research use only (RUO)

Storage Instruction

Store at 2-8°C in an upright position. Return to storage conditions immediately after use.

Note

The probe is intended to be used in combination with the CISH Implementation Kit 2 (Catalog #: KA5366), which provides necessary reagents for specimen pretreatment and post-hybridization processing.

Hybridization signals of digoxigenin-labeled polynucleotides appear dark green colored distinct dotshaped (proximal to the ROS1 breakpoint region), and dinitrophenyl-labeled polynucleotides appear bright red distinct dot-shaped (distal to the ROS1 breakpoint region).
Normal situation: In interphases of normal cells or cells without a translocation involving the ROS1 gene region, two red/green fusion signals appear.
Aberrant situation: One ROS1 gene region affected by a translocation is indicated by one separate green signal and one separate red signal. Isolated green signals are the result of deletions distal to the ROS1 breakpoint region or are due to unbalanced translocations affecting this chromosomal region. Other signal distribution may be observed in some abnormal samples which might result in a different signal pattern than described above, indicating variant rearrangements.
Unexpected signal patterns should be further investigated.

Interpretation of Result