A Dose-Finding Study of MAL and HAL Photodynamic Therapy of Cervical Premalignant Lesions.

2014-08-27 03:42:50 | BioPortfolio


The study will determine the best drug (MAL or HAL) dosage for photodynamic therapy of cervical precancerous lesions (dysplasia) in women that are referred for conisation (surgery).


Surgery (conisation) of precancerous cervical lesions (dysplasia) increase the risk of preterm deliveries in young women. Photodynamic therapy (PDT) is a selective, tissue preserving method that may become a good treatment option for these patients.

This study will explore topical application of methyl aminolevulinate (MAL) and hexaminolevulinate (HAL) of the cervix for photodynamic therapy using red light (630 nm). Different doses of MAL and HAL will be used with different application time, followed by illumination.

Study Design

Allocation: Randomized, Control: Active Control, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Treatment


Cervical Dysplasia


methyl aminolevulinate (MAL) and hexaminolevulinate (HAL)


Medizinische Hochschule Hannover, Department of Obstetrics and Gynecology


Active, not recruiting



Results (where available)

View Results


Published on BioPortfolio: 2014-08-27T03:42:50-0400

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Hexaminolevulinate (HAL) Photodynamic Therapy (PDT) of Cervical Intraepithelial Neoplasia (CIN) Grade 1

The study will examine the effect of HAL vs placebo photodynamic therapy of low-grade cervical precancerous lesions (dysplasia) in women.

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PubMed Articles [3087 Associated PubMed Articles listed on BioPortfolio]

Methyl aminolevulinate daylight-photodynamic therapy applied at home for non-hyperkeratotic actinic keratosis of the face or scalp: an open, interventional study conducted in Germany.

The efficacy and safety of methyl aminolevulinate daylight photodynamic therapy (MAL DL-PDT) for actinic keratosis (AK) treatment has previously been demonstrated in several studies.

Biomarkers of basal cell carcinoma resistance to methyl-aminolevulinate photodynamic therapy.

Methyl-aminolevulinate photodynamic therapy (MAL-PDT) is an excellent option for the treatment of basal cell carcinoma (BCC). However, up to 25% of cases are resistant to this treatment modality.

Long-term efficacy of photodynamic therapy with methyl aminolevulinate in treating Bowen's disease in clinical practice: a retrospective cohort study (2006-2017).

Photodynamic treatment with methyl aminolevulinate (MAL-PDT) is considered an effective and highly recommended treatment for Bowen's disease. However, its long-term efficacy remains to be established,...

Association between Cervical Dysplasia and Adverse Pregnancy Outcomes.

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Cervical Cancer Screening Access, Outcomes, and Prevalence of Dysplasia in Correctional Facilities: A Systematic Review.

Incarcerated women often access health care primarily through contact with correctional systems. Cervical cancer screening within the correctional system can address the preventable outcome of cervica...

Medical and Biotech [MESH] Definitions

A malignancy arising in uterine cervical epithelium and confined thereto, representing a continuum of histological changes ranging from well-differentiated CIN 1 (formerly, mild dysplasia) to severe dysplasia/carcinoma in situ, CIN 3. The lesion arises at the squamocolumnar cell junction at the transformation zone of the endocervical canal, with a variable tendency to develop invasive epidermoid carcinoma, a tendency that is enhanced by concomitant human papillomaviral infection. (Segen, Dictionary of Modern Medicine, 1992)

Abnormal development of immature squamous EPITHELIAL CELLS of the UTERINE CERVIX, a term used to describe premalignant cytological changes in the cervical EPITHELIUM. These atypical cells do not penetrate the epithelial BASEMENT MEMBRANE.

An enzyme of the transferase class that catalyzes condensation of the succinyl group from succinyl coenzyme A with glycine to form delta-aminolevulinate. It is a pyridoxyal phosphate protein and the reaction occurs in mitochondria as the first step of the heme biosynthetic pathway. The enzyme is a key regulatory enzyme in heme biosynthesis. In liver feedback is inhibited by heme. EC

A network of nerve fibers originating in the upper four cervical spinal cord segments. The cervical plexus distributes cutaneous nerves to parts of the neck, shoulders, and back of the head, and motor fibers to muscles of the cervical spinal column, infrahyoid muscles, and the diaphragm.

A parameter usually used in PRENATAL ULTRASONOGRAPHY to measure the length of the uterine neck (CERVIX UTERI). Cervical length or its shortening is used to identify and prevent early cervical opening and PRETERM BIRTH.

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