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SALSA MLPA Probemix P064 Microdeletion Syndromes-1B

Microdeletion syndromes; Microduplication syndromes

Region: Various

MLPA | CE IL MA
Intended purpose
The SALSA MLPA Probemix P064 Microdeletion Syndromes-1B is an in vitro diagnostic (IVD)1 or research use only (RUO) semi-quantitative assay2 for the detection of a distinct subset of recurrent microdeletions and microduplications (mentioned in the table below) in genomic DNA isolated from human peripheral whole blood, buccal swabs, (un)cultured amniotic fluid obtained in week 16 of the pregnancy or later and free from blood contamination, (un)cultured chorionic villi free from maternal contamination, or foetal blood specimens. P064 Microdeletion Syndromes-1B is intended to confirm a potential cause for and clinical diagnosis of developmental delay and/or intellectual disability syndromes.

This probemix has a limited number of probes for each specific chromosomal region and will therefore not detect all possible causes of the syndromes included. Copy number variations (CNVs) detected with the P064 Microdeletion Syndromes-1B probemix must be confirmed by a designated MLPA follow-up probemix or another technique.
Assay results are intended to be used in conjunction with other clinical and diagnostic findings, consistent with professional standards of practice, including confirmation by alternative methods, parental evaluation, clinical genetic evaluation, and counselling, as appropriate. The results of this test should be interpreted by a clinical molecular geneticist or equivalent.

This device is not intended to be used for standalone diagnostic purposes, pre-implantation testing, population screening, or for the detection of, or screening for, acquired or somatic genetic aberrations.

1Please note that this probemix is for in vitro diagnostic (IVD) use in the countries specified at the end of this product description. In all other countries, the product is for research use only (RUO).
2To be used in combination with a SALSA MLPA Reagent Kit and Coffalyser.Net analysis software.



Syndromes that can be detected by the P064 probemix
SyndromeGenetic locusOMIMNumber of probes
1p36 deletion syndrome1p366078724
Wolf-Hirschhorn syndrome4p16.31941904
Cri-du-Chat syndrome5p151234505
Sotos syndrome5q35.31175503
Saethre-Chotzen syndrome7p21.11014002
Williams-Beuren syndrome7q11.231940503
Williams-Beuren duplication syndrome7q11.23609757
Langer-Giedion syndrome8q24.11-q24.131502303
WAGR syndrome11p131940723
Prader-Willi syndrome15q11.21762704
Angelman syndrome15q11.2105830
Rubinstein-Taybi syndrome16p13.31808492
Miller-Dieker syndrome17p13.32472004
Lissencephaly-117p13.3607432
Smith-Magenis syndrome17p11.21822904
Potocki-Lupski syndrome17p11.2610883
Alagille syndrome20p12.21184502
DiGeorge syndrome22q11.211884007
22q11.2 microduplication syndrome22q11.2608363
Phelan-McDermid syndrome22q136062322


Clinical background
Microdeletion and microduplication syndromes are defined as a group of clinically recognisable disorders characterised by a small (< 5 Mb) deletion or duplication of a chromosomal segment spanning multiple disease genes. The phenotype is the result of haploinsufficiency or overexpression of specific genes in the critical interval. Clinically well described syndromes, for which the involvement of multiple disease genes has been established or is strongly suspected, include DiGeorge syndrome (22q11 microdeletion), Williams-Beuren syndrome (7q11 microdeletion), Smith-Magenis Syndrome (17p microdeletion) and many more. Most patients with microdeletion/microduplication syndromes present with intellectual disability (ID), developmental delay (DD), congenital abnormalities and/or dysmorphic features.

Intellectual disability and developmental delay affects 1-3% of the population and results from extraordinary heterogeneous environmental, chromosomal and monogenic causes. Detailed analysis of the Online Mendelian Inheritance in Man database and literature searches revealed more than a thousand entries for ID and DD, and more than 290 genes involved in clinical phenotypes or syndromes, metabolic or neurological disorders characterised by ID/DD.

The genetic changes of microdeletions/duplications are often not detectable by the current band resolution using routine or high resolution karyotyping (2-5 Mb) but require the application of molecular cytogenetic techniques such as Fluorescence In Situ Hybridisation (FISH), MLPA or array Comparative Genomic Hybridisation (aCGH).

Probemix content
The SALSA MLPA Probemix P064 Microdeletion Syndromes-1B contains 52 MLPA probes with amplification products between 130 and 483 nucleotides (nt). The probes detect sequences involved in a distinct subset of microdeletion and microduplication disorders (described above). Complete probe sequences 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. 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.

Order Items

Probemix

Item no.
Description
Technology
Price
P064-025R
SALSA MLPA Probemix P064 Microdeletion Syndromes-1B – 25 rxn
€ 243.00
P064-050R
SALSA MLPA Probemix P064 Microdeletion Syndromes-1B – 50 rxn
€ 486.00
P064-100R
SALSA MLPA Probemix P064 Microdeletion Syndromes-1B – 100 rxn
€ 972.00

Required Reagents (Sold Separately)

Item no.
Description
Technology
Price
EK1-FAM
SALSA MLPA EK1 reagent kit – 100 rxn – FAM
€ 300.00
EK1-Cy5
SALSA MLPA EK1 reagent kit – 100 rxn – Cy5
€ 300.00
EK5-FAM
SALSA MLPA EK5 reagent kit – 500 rxn – FAM
€ 1380.00
EK5-Cy5
SALSA MLPA EK5 reagent kit – 500 rxn – Cy5
€ 1380.00
EK20-FAM
SALSA MLPA EK20 reagent kit – 2000 rxn – FAM
€ 5295.00

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CE

CE-marked products are for In Vitro Diagnostic (IVD) use only in EU (candidate) member states and members of the European Free Trade Association (EFTA).

IL

IVD-registered in Israel.

MA

IVD-registered in Morocco.