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Living with Tubulointerstitial kidney disease, autosomal dominant, 2

An inherited kidney condition (medullary cystic kidney disease type 1) that causes scarring and lowers kidney function, usually in adulthood.

Understanding Tubulointerstitial kidney disease, autosomal dominant, 2

Tubulointerstitial kidney disease, autosomal dominant, 2, also called medullary cystic kidney disease type 1 (MCKD1), is an inherited kidney condition.

It causes scarring (fibrosis) and reduced kidney function, usually starting in adulthood. As kidney function declines, many people develop high blood pressure, and some have high uric acid in the blood, which can cause gout. Only about 40 percent of people have kidney cysts. Features vary even in the same family.

Signs & symptoms

GARD doesn't list a separate symptom list. The summary describes these features:

  • Slowly reduced kidney function
  • High blood pressure (hypertension)
  • High uric acid in the blood (hyperuricemia)
  • Gout in a small number of people
  • Kidney cysts in about 40 percent of people

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include genetic specialists and kidney specialists.

  3. Consider genetic testing

    Changes in MUC1 are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

Care & treatment

Care team
Genetic specialists (geneticists); Kidney specialists (nephrologists)
Expert care
Ask about multidisciplinary care centers for rare conditions
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with American Association of Kidney Patients and other patient organizations
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Can genetic testing of the MUC1 gene confirm this diagnosis?
How often should kidney function and blood pressure be checked?
Which specialists, such as a kidney specialist, should I see?

Quick facts

Symptoms usually startAdult
InheritanceAutosomal Dominant
GenesMUC1

This condition is caused by changes in the MUC1 gene. It is autosomal dominant, which means one changed copy of the gene can be enough to cause it.

GeneticKidney

Also known as: adtkd-muc1; adtkd2; autosomal dominant medullary cystic kidney disease without hyperuricemia; autosomal dominant tubulointerstitial kidney disease due to mutations in muc1; mckd1; medullary cystic kidney disease 1

Patient organizations

Source: NIH GARD · Tubulointerstitial kidney disease, autosomal dominant, 2GARD ID 7002 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

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