Werner syndrome

What it is, symptoms and effects

From: MedlinePlus Genetics, National Library of Medicine

Werner syndrome is characterized by the dramatic, rapid appearance of features associated with normal aging. Individuals with this disorder typically grow and develop normally until they reach puberty. Affected teenagers usually do not have a growth spurt, resulting in short stature. The characteristic aged appearance of individuals with Werner syndrome typically begins to develop when they are in their twenties and includes graying and loss of hair; a hoarse voice; and thin, hardened skin. They may also have a facial appearance described as "bird-like." Many people with Werner syndrome have thin arms and legs and a thick trunk due to abnormal fat deposition.

As Werner syndrome progresses, affected individuals may develop disorders of aging early in life, such as cloudy lenses (cataracts) in both eyes, skin ulcers, type 2 diabetes, diminished fertility, severe hardening of the arteries (atherosclerosis), thinning of the bones (osteoporosis), and some types of cancer. It is not uncommon for affected individuals to develop multiple, rare cancers during their lifetime. People with Werner syndrome usually live into their late forties or early fifties. The most common causes of death are cancer and atherosclerosis.

ORPHANET DEFINITION Werner syndrome (WS) is a rare inherited syndrome characterized by premature aging with onset in the third decade of life and with cardinal clinical features including bilateral cataracts, short stature, graying and thinning of scalp hair, characteristic skin disorders and premature onset of additional age-related disorders.

Inheritance

From: MedlinePlus Genetics, National Library of Medicine

Autosomal recessive

Frequency in the source

From: MedlinePlus Genetics, National Library of Medicine

Point prevalence: 1-9 / 1 000 000; United States; Value and class. Point prevalence: 1-9 / 100 000; Japan; Value and class. Point prevalence: 1-9 / 100 000; Specific population; Value and class. Point prevalence: 1-9 / 1 000 000; Europe; Value and class.

Reported clinical features and what the terms mean

The following findings are associated with this condition in Orphanet. They are not a checklist for diagnosing yourself, and they do not all occur in every affected person. Some are examination, imaging or laboratory findings that cannot be recognised at home.

The frequency labels describe how often a finding was reported among people with the condition in the source. They do not give the chance that a person with that symptom has the condition. Definitions below reproduce HPO terminology; they explain the term, not the likely severity in an individual.

Abnormal hair whorl · Very frequent (99-80%)

An abnormal hair whorl (that is, a patch of hair growing in the opposite direction of the rest of the hair).

Abnormal thorax morphology · Very frequent (99-80%)

Any abnormality of the thorax (the region of the body formed by the sternum, the thoracic vertebrae and the ribs).

Cataract · Very frequent (99-80%)

A cataract is an opacity or clouding that develops in the crystalline lens of the eye or in its capsule.

Convex nasal ridge · Very frequent (99-80%)

Nasal ridge curving anteriorly to an imaginary line that connects the nasal root and tip. The nose appears often also prominent, and the columella low.

Hypogonadism · Very frequent (99-80%)

A decreased functionality of the gonad.

Lipoatrophy · Very frequent (99-80%)

Localized loss of fat tissue.

Osteoporosis · Very frequent (99-80%)

Osteoporosis is a systemic skeletal disease characterized by low bone density and microarchitectural deterioration of bone tissue with a consequent increase in bone fragility. According to the WHO criteria, osteoporosis is defined as a BMD that lies 2.5 standard deviations or more below the average value for young healthy adults (a T-score below -2.5 SD).

Pili torti · Very frequent (99-80%)

Pili (from Latin pilus, hair) torti (from Latin tortus, twisted) refers to short and brittle hairs that appear flattened and twisted when viewed through a microscope.

Premature graying of hair · Very frequent (99-80%)

Development of gray hair at a younger than normal age.

Short stature · Very frequent (99-80%)

A height below that which is expected according to age and gender norms. Although there is no universally accepted definition of short stature, many refer to "short stature" as height more than 2 standard deviations below the mean for age and gender (or below the 3rd percentile for age and gender dependent norms).

Slender build · Very frequent (99-80%)

Asthenic habitus refers to a slender build with long limbs, an angular profile, and prominent muscles or bones.

Sparse scalp hair · Very frequent (99-80%)

Decreased number of hairs per unit area of skin of the scalp.

White forelock · Very frequent (99-80%)

A triangular depigmented region of white hairs located in the anterior midline of the scalp.

Abnormality of the voice · Very frequent (99-80%)

Other findings in the same source

From: Orphanet

Additional reported features include Prematurely aged appearance (Very frequent (99-80%)); Abnormal testis morphology (Frequent (79-30%)); Abnormality of retinal pigmentation (Frequent (79-30%)); Aplasia/Hypoplasia of the testes (Frequent (79-30%)); Atherosclerosis (Frequent (79-30%)); Chondrocalcinosis (Frequent (79-30%)); Congestive heart failure (Frequent (79-30%)); Hyperkeratosis (Frequent (79-30%)); Increased bone mineral density (Frequent (79-30%)); Insulin resistance (Frequent (79-30%)). This is a selected summary, not a complete description of the condition.

When it may begin

From: MedlinePlus Genetics, National Library of Medicine

Adolescent; Adult

Inheritance in the source

From: MedlinePlus Genetics, National Library of Medicine

Autosomal recessive

Frequency and the population described

From: MedlinePlus Genetics, National Library of Medicine

Point prevalence: 1-9 / 1 000 000; United States; Value and class. Point prevalence: 1-9 / 100 000; Japan; Value and class. Point prevalence: 1-9 / 100 000; Specific population; Value and class. Point prevalence: 1-9 / 1 000 000; Europe; Value and class.

Understanding the inheritance label

From: MedlinePlus Genetics

An autosomal recessive pattern usually involves disease-causing changes in both copies of a gene. Parents may each carry one altered copy without having the condition themselves. A genetic counsellor can explain carrier testing and reproductive implications using the actual laboratory findings, rather than the condition name alone.

Which doctor should you see?

The suggested department for discussing Werner syndrome is Clinical Genetics, with a clinical geneticist as the relevant type of clinician. Paediatrician (children) or physician (adults), with clinical geneticist referral.

This is an editorial referral starting point. The appropriate clinic depends on the person’s age, symptoms, previous diagnosis and local services. The first clinician can decide whether another specialty or a team is needed; a department label does not confirm the diagnosis.

How to prepare for an assessment

Bring a short timeline of the main symptoms: when they first appeared, whether they are constant or episodic, what seems to change them, and how they affect daily activities. Include previous reports, discharge summaries, current medicines and supplements, allergies, and any relevant family history. A dated record is more useful than trying to match every feature in an online article.

Ask the clinician what is already established and what remains uncertain. If a test is suggested, ask what question it answers, what its limitations are and how the result would change the next step. The information here is not an instruction to arrange every possible test. In children, bring growth, developmental and school information if it is relevant to the concern.

• Does the exact genetic or chromosome finding explain the observed features?
• Would a genetic counsellor help the family understand the result?
• Which organ-specific assessments are appropriate for this particular diagnosis?

Treatment discussions and follow-up

The material gathered for this draft does not provide a complete condition-specific treatment pathway for Werner syndrome. That gap does not mean that treatment is unavailable. A clinician needs to establish the diagnosis and review current guidance before recommending medicines, procedures, rehabilitation or other support.

Before leaving the appointment, clarify the next review date, who will communicate results, and whom to contact if the situation changes. Discuss difficulties with sleep, work, school, mobility, eating or emotional wellbeing when these are relevant. Practical support may require coordination between the treating clinician and other services.

The collected references do not establish a complete prevention or long-term outlook section for this entry. Missing information should not be interpreted as proof that prevention is impossible or that a particular outcome is inevitable. Ask what is known for the exact subtype, stage and personal circumstances, and which uncertainties remain.

When to seek emergency help

Severe breathing difficulty, collapse, new stroke-like symptoms, a seizure that is prolonged or repeated without recovery, uncontrolled major bleeding, or an immediate risk of self-harm require emergency help. In India, call 112 or reach the nearest emergency department. This is a general, non-exhaustive warning list; it is not a condition-specific triage tool.