biology

Sifap

Sifap is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Sifap rather than just read about it. In short: Sifap ("stroke in young Fabry patients") is a Pan-European study dedicated to investigating the correlation of juvenile stroke and a genetic disorder known as Fabry's disease. It was initiated by University of Rostock, Germany.

Key takeaways

Sifap belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Sifap to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Sifap from memory before moving on to harder problems.

Reference excerpt

Sifap ("stroke in young Fabry patients") is a Pan-European study dedicated to investigating the correlation of juvenile stroke and a genetic disorder known as Fabry's disease. It was initiated by University of Rostock, Germany. In recruiting 5,000 patients aged 18 to 55 it will be the largest study on stroke in the young. Approximately 50 study centres from about 15 European countries are participating in the project. The study is divided into two parts: sifap1 and sifap2. Whereas sifap1 analyses the frequency of Fabry disease within the patient cohort, sifap2 controls and investigates the rehabilitation phase of diagnosed Fabry patients.

Background The goal of the study is to show that Fabry disease has to be considered to be one of the most frequent genetic causes of juvenile stroke. To date the frequency of Fabry disease among general population has been estimated to be around 1:40,000. However, recent investigations have shown that Fabry disease can occur in 1 of 83 stroke patients aged 18–55 and between 1 of 3,500 to 1 of 4,500 individuals of the general population. Sifap aims at scientifically testing and supporting these findings.

Progress After the proof-of-principle phase (April to December 2007) the official start of the study was January 1, 2008. Sifap1 patients were recruited until June 30, 2009. Sifap2 runs simultaneously, and is scheduled to conclude on June 30, 2012.

Technique

One of sifap’s unique characteristics is the fully automated analysis and storage of specimens in combination with the complete digital and web-based data handling. A pipetting robot extracts DNA from specimens and analyses them for Fabry disease. Afterwards, specimens are automatically stored in a biobank and consequently are available for future investigations.

Committees In order to control, advise and establish professional structures two committees were formed. Publication issues and sifap basics are the responsibility of the steering committee. The nine members are: Miron Ginsberg (Miami, USA), Michael Hennerici (Mannheim, Germany), Christof Kessler (Greifswald, Germany), Edwin Kolodny (New York, USA), Peter Martus (Berlin, Germany), Bo Norrving (Lund, Sweden), Erich-Bernd Ringelstein (Münster, Germany), Peter Rothwell (Oxford, UK) and Graham Vanables (Sheffield, UK) The biobank committee oversees the administration of stored specimens and decides in formal meetings on proposed new projects. The biobank committee consists of: Natan Bornstein (Tel Aviv, Israel), Peter Paul DeDeyn (Antwerp, Belgium), Martin Dichgans (Munich, Germany), Franz Fazekas (Graz, Austria), Hugh Markus (London, UK), Olaf Rieß (Tübingen, Germany) and Arndt Rolfs (Rostock, Germany). Imaging analysis was centrally performed at the Department of Neurology of the Medical University of Graz, coordinated by Franz Fazekas.

Participating Centres

Literature Rolfs et al. "Prevalence of Fabry disease in patients with cryptogenic stroke: a prospective study", The Lancet, Vol 366, 2005 Spada et al. "High Incidence of Later-Onset Fabry Disease Revealed by Newborn Screening", The American Journal of Human Genetics, Vol 79, 2006

References

External links Official website (archived)

Worked examples

Example 1 — a first encounter with Sifap

Start with the simplest possible case. Write down what Sifap claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Sifap before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Sifap ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Sifap

In research: Sifap appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Sifap in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Sifap is common in secondary-school and first-year university syllabi. It links to neighbouring topics Evidence-based medicine, so understanding it makes those chapters shorter.
In everyday life: Look for Sifap outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Sifap in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Sifap means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Sifap out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Sifap in simple terms?

Why does Sifap matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Sifap?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Sifap.