17q12 Knowledge Basedeletion syndrome · static snapshot
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Knowledge base

Plain-language explanations first, then the detail, then the evidence the crawler actually found. Blue "In plain language" boxes are written for people who have never read a genetics paper; the sections below them are for when you want the numbers and the sources.

All 18 What it is 1 Genes & inheritance 2 Signs & symptoms 2 kidney and urinary tract 2 learning, speech and behaviour 2 How it is diagnosed 2 Day-to-day care 2 Family planning & counseling 1 Living with it / outlook 1 Research frontier 2 Support & community 1

A rare, variable genetic condition caused when a small piece of one copy of chromosome 17 is missing. It commonly affects the kidneys and can cause diabetes and learning or speech differences - but the range of what people experience is wide.

written for humans 10 supporting sources conf 85% updated today
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How the diagnosis is made

How it is diagnosed

A chromosomal microarray (or genome/exome with CNV calling) finds it. A standard karyotype can miss it. Prenatal detection is increasingly common. Parental testing comes next.

written for humans 10 supporting sources conf 85% updated today
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50% transmission risk if a parent carries it. Cascade testing of relatives is the single most useful next step. Prenatal and preimplantation options exist.

written for humans 10 supporting sources conf 80% updated today
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About 15 genes are usually deleted. HNF1B does most of the work. The deletion is autosomal dominant: it can come from a parent (often a parent who is mildly affected and undiagnosed) or arise new in the child.

written for humans 10 supporting sources conf 85% updated today
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The most medically actionable part of the condition: structural kidney differences, reduced kidney function, and HNF1B-MODY diabetes. All are screenable, and screening changes outcomes.

written for humans 10 supporting sources conf 85% updated today
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There is no treatment for the deletion itself. Care is: screen the kidneys, pancreas and glucose; support development early; treat what shows up; and hand over sensibly at the transition to adult services.

written for humans 813 supporting sources conf 80% updated today
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Learning, speech, movement and behaviour

learning, speech and behaviour

Speech delay is the most commonly reported early sign. Support needs range from none to intellectual disability; autism traits, ADHD and anxiety are over-represented, and there is a raised risk of psychosis in adulthood.

written for humans 126 supporting sources conf 78% updated today
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Many carriers go to school, work and live independently. The main threats to quality of life are untreated kidney disease, mislabelled diabetes, and unsupported speech or learning needs.

written for humans 10 supporting sources conf 72% updated today
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Natural-history and genotype-phenotype studies, HNF1B cell and animal models, better breakpoint mapping with long-read sequencing, and registries that recruit families.

written for humans 10 supporting sources conf 70% updated today
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Kidneys and urinary tract, pancreas/diabetes, liver enzymes, reproductive anatomy, development, speech, behaviour, and occasionally seizures or heart differences. Any subset is possible - including none at all.

written for humans 10 supporting sources conf 80% updated today
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