Diagnostic assay for breast cancer susceptibility

C - Chemistry – Metallurgy – 12 – Q

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C12Q 1/68 (2006.01) C12N 15/12 (2006.01) C12P 19/34 (2006.01)

Patent

CA 2269664

The lifetime probability of a woman developing breast cancer can now be determined based on an allelic variation found in the 3'UTR of the prohibitin gene. The probability is dependent on the sequence of the 3'UTR at position 729, i.e., whether there is a thymine (T) or a cytosine (C) or both at this position. Polymorphism at position 729 is also disclosed as a susceptibility indicator for hereditary breast cancer in men. Determining the sequence at the position 729 can be done by any number of standard techniques. Preferably, the sequence is determined by amplifying this region by PCR and subjecting it to an RFLP analysis.

La prédisposition d'une femme à développer un carcinome mammaire au cours de sa vie peut désormais être déterminée sur la base d'une variation allélique découverte dans la région 3' non traduite du gène de la prohibitine. La prédisposition dépend de la séquence de la région 3' non traduite en position 729, c'est-à-dire qu'elle dépend de la présence d'une thymine (T) et/ou d'une cytosine (C) à cette position. Un polymorphisme en position 729 indique également la probabilité d'un carcinome mammaire héréditaire chez l'homme. Il est possible de déterminer la séquence en position 729 au moyen de n'importe quelle technique standard. De préférence, la séquence est déterminée par amplification de cette région par PCR et par analyse RFLP de cette région.

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