: The SALSA MLPA Probemix P438 ATP1A2-CACNA1A-PRRT2 is a research use only (RUO)
assay for the detection of deletions or duplications in the ATP1A2
genes, which are associated with familial hemiplegic migraine (FHM).
Migraine is a common neurological disorder that affects up to 15% of the general population (Vos et al. 2012). FHM is a rare autosomal dominantly inherited subtype of migraine with aura. In case of FHM, the aura usually consist of a phase with hemiparesis accompanied by typical aura symptoms, including visual, sensory or speech disturbances, followed by a headache phase (Jen JC. 2015). Four genes have been identified for different types of FHM: CACNA1A
and the more recently identified gene PRRT2
(Friedrich et al. 2016).
gene (23 exons) spans ~28 kb of genomic DNA and is located on 1q23.2, ~160 Mb from the p-telomere. The CACNA1A
gene (47 exons) spans ~300 kb of genomic DNA and is located on 19p13, ~13 Mb from the p-telomere. The PRRT2
gene (4 exons) spans ~3.7 kb of genomic DNA and is located on 16p11.2, ~30 Mb from the p-telomere.
More information is available at https://www.ncbi.nlm.nih.gov/books/NBK1388/
: The SALSA MLPA Probemix P348-C1 ATP1A2-CACNA1A-PRRT2 contains 49 MLPA probes with amplification products between 130 and 511 nucleotides (nt). This includes 21 probes for ATP1A2
, 15 probes for CACNA1A
and five probes for PRRT2
. In addition, eight reference probes are included that detect autosomal chromosomal locations. Complete probe sequences and the identity of the genes detected by the reference probes are available online (www.mrcholland.com
This probemix contains nine quality control fragments generating amplification products between 64 and 105 nt: four DNA Quantity fragments (Q-fragments), two DNA Denaturation fragments (D-fragments), one Benchmark fragment, and one chromosome X and one chromosome Y-specific fragment (see table below). More information on how to interpret observations on these control fragments can be found in the MLPA General Protocol and online at www.mrcholland.com