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Living with Linear skin defects with multiple congenital anomalies

A genetic condition, mostly in females, with small or underdeveloped eyes and linear skin markings on the head and neck.

Understanding Linear skin defects with multiple congenital anomalies

Linear skin defects with multiple congenital anomalies, also called microphthalmia with linear skin defects (MLS) syndrome, is a genetic condition that affects the eyes and skin.

It is mainly found in females. Features are small or poorly developed eyes and linear skin markings on the head and neck. It may also involve the brain, heart, and urogenital system, short stature, developmental delay, and nail changes. It is noticed in newborns.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Small or poorly developed eyes
  • Linear skin markings on the head and neck
  • Heart differences
  • Irregular heartbeat
  • Changes in facial shape
  • Skin pigment differences

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 brain and nervous system specialists, digestive system specialists, eye disease specialists and genetic specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

Care & treatment

Care team
Brain and nervous system specialists (neurologists); Digestive system specialists (gastroenterologists); Eye disease specialists (ophthalmologists); Genetic specialists (geneticists)
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 Children's Skin Disease Foundation
  • 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
Would testing for HCCS, COX7B, or NDUFB11 changes help us?
Which specialists should follow heart, eye, and brain health?
How could this affect other family members?

Quick facts

Symptoms usually startNewborn
InheritanceX-Linked

It is typically caused by a deletion on the short arm of the X chromosome or a change in the HCCS gene. Sometimes it is caused by changes in the COX7B or NDUFB11 genes. It is inherited in an X-linked way.

GeneticNeurologicalGastrointestinalSkin

Also known as: linear skin defects with multiple congenital anomalies type 1; mcops7; microphthalmia with linear skin defects syndrome; microphthalmia-dermal aplasia-sclerocornea syndrome; midas syndrome; mls syndrome

Patient organizations

Broader rare-disease groups

Source: NIH GARD · Linear skin defects with multiple congenital anomaliesGARD ID 3659 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Linear skin defects with multiple congenital anomalies.

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