17q12 deletion: the short version for you
A tiny piece is missing from one of the instruction books inside your body's cells. It can change your kidneys, your blood sugar or how you learn - but nobody can guess ahead of time exactly what it will mean for you.
Your body is made of tiny building blocks called cells. Inside almost every cell there are 46 instruction books. The books are called chromosomes, and the recipes inside them are called genes. The recipes tell your body how to build you.
In 17q12 deletion syndrome, one page is missing from one copy of book number 17. That page holds about 15 recipes. Because some of those recipes are about kidneys and about how the body handles sugar, some people with the missing page have kidney problems or diabetes. Some learn to talk a bit later, or need extra help at school.
The most important thing to know: everyone is different. Two people with exactly the same missing page can have completely different lives. One might need a lot of doctors' visits. Another might hardly notice it at all - and some people only find out they have it when their own child gets tested.
Is it your fault? No. Not yours, not your parents', not anything anyone did. It just happens when a body is being made.
Is it contagious? No. You cannot catch it like a cold, and you cannot give it to a friend.
The newest thing we found: 17q12 microdeletion syndrome is a chromosomal condition in which a small part of chromosome 17 is missing (deleted). 1 This small deletion, also known as a microdeletion, occurs at a location on chromosome 17 called 17q12.
The missing page
Your 46 books come in 23 pairs - one of each from each parent. Book 17 comes in a pair too. In this syndrome, a small piece is missing from one of the two copies. The other copy is still there and still working, which is why many people do really well.
The missing piece is about 1.4 million letters long. That sounds enormous, but it is a very small scratch on a book that holds about 50 million letters.
What it can change
- Kidneys - doctors often check them with an ultrasound scan.
- Blood sugar - some people get diabetes, which doctors can treat.
- Learning and talking - some kids start talking later or need extra help at school.
- Other things - eyes, ears, heart, tummy. Most people have only some of these, not all.
Because nobody knows in advance which ones will show up, doctors do regular check-ups. That is not because something is wrong - it is so that if something does show up, they can help early.
What the newest stories say
17q12 microdeletion syndrome - Rare Awareness Rare Education Portal
17q12 microdeletion syndrome is a chromosomal condition in which a small part of chromosome 17 is missing (deleted). 1 This small deletion, also known as a microdeletion, occurs at a location on chromosome 17 called 17q12.
“In rare cases, the deletion was inherited from a parent in an autosomal dominant manner (there is a 50% chance that an affected parent will pass it to each of their children).”found in 1 stories · we are 97% sure · updated 2026-11-13 · read it
P786: Chromosome 17q12 deletion including HNF1B presenting with recurrent severe cholestasis and profound hypomagnesemia during pregnancy
P786: Chromosome 17q12 deletion including HNF1B presenting with recurrent severe cholestasis and profound hypomagnesemia during pregnancy The patient had ongoing magnesium infusions during hospital admissions and as an outpatient.
“P786: Chromosome 17q12 deletion including HNF1B presenting with recurrent severe cholestasis and profound hypomagnesemia during pregnancy The patient had ongoing magnesium infusions during hospital admissions and as an outpatient.”found in 1 stories · we are 97% sure · updated 2026-11-13 · read it
How To Register – 17q12 Patient Registry
How To Register – 17q12 Patient Registry
“17q12 Patient Registry Thank you for your interest in the 17q12 Patient Registry .”found in 1 stories · we are 80% sure · updated 2026-11-13 · read it
17q12 Patient Registry
Chromosome 17q12 Deletion and Duplication Syndromes Patient Registry (17q12 Patient Registry) The 17q12 Patient Registry serves the chromosome 17q12 deletion and duplication syndromes community.
“Chromosome 17q12 Deletion and Duplication Syndromes Patient Registry (17q12 Patient Registry) The 17q12 Patient Registry serves the chromosome 17q12 deletion and duplication syndromes community.”found in 1 stories · we are 80% sure · updated 2026-11-13 · read it
17q12 Patient Registry
Chromosome 17q12 Deletion and Duplication Syndromes Patient Registry (17q12 Patient Registry) The 17q12 Patient Registry serves the chromosome 17q12 deletion and duplication syndromes community.
“Chromosome 17q12 Deletion and Duplication Syndromes Patient Registry (17q12 Patient Registry) The 17q12 Patient Registry serves the chromosome 17q12 deletion and duplication syndromes community.”found in 1 stories · we are 80% sure · updated 2026-11-13 · read it
chromosome 17q12 deletion syndrome - National Organization for Rare Disorders
The Genetic and Rare Diseases Information Center (GARD) has information and resources for patients, caregivers, and families that may be helpful before and after diagnosis of this condition.
“Disease Overview 17q12 microdeletion syndrome is a rare chromosomal anomaly syndrome resulting from the partial deletion of the long arm of chromosome 17 characterized by renal cystic disease, maturity onset diabetes of the young type 5, and…”found in 1 stories · we are 80% sure · updated 2026-11-13 · read it
Someone reported something new: In this report, we describe a 12-year-old Japanese female with early-onset diabetes mellitus, pancreatic hypop…
A source describes a new or expanded observation: “In this report, we describe a 12-year-old Japanese female with early-onset diabetes mellitus, pancreatic hypoplasia, and multiple renal cysts, harboring a novel de novo HNF1B missense variant (p.Met160Thr) located within the POU-specific domain.”
“In this report, we describe a 12-year-old Japanese female with early-onset diabetes mellitus, pancreatic hypoplasia, and multiple renal cysts, harboring a novel de novo HNF1B missense variant (p.Met160Thr) located within the POU-specific domain.”found in 1 stories · we are 97% sure · updated 2026-11-14 · read it
Someone reported something new: We report a novel in-frame deletion of HNF1B in a family with renal cysts and MODY, furthering our understandi…
A source describes a new or expanded observation: “We report a novel in-frame deletion of HNF1B in a family with renal cysts and MODY, furthering our understanding of HNF1B -related phenotypes.”
“We report a novel in-frame deletion of HNF1B in a family with renal cysts and MODY, furthering our understanding of HNF1B -related phenotypes.”found in 1 stories · we are 97% sure · updated 2026-11-14 · read it
This entry is version 15. The analytical engine only appends the clearly-labelled “Latest evidence” section; the text above is curated and is not rewritten by the machine. Confidence 85% · last updated 2026-11-14 16:44