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Published on: May 25, 2020
Congenital glaucoma prevention program-Evaluation of patient knowledge and acceptance of genetic screening
Areej Alizary1, Abdulwahab AlTheeb1, Syed Hameed1
1King Khalid Eye Specialist Hospital, Riyadh, Saudi Arabia.
Insights
Parents and patients with primary congenital glaucoma (PCG) understand genetic risks but need clearer recurrence information. High interest in prenatal genetic screening (PGS) and preimplantation genetic diagnosis (PGD) supports prevention programs.
Area of Science:
- Ophthalmology
- Genetics
- Public Health
Background:
- Primary congenital glaucoma (PCG) is a severe inherited eye condition.
- Genetic counseling and testing are crucial for managing PCG.
- Understanding patient knowledge is key to effective prevention strategies.
Purpose of the Study:
- To assess knowledge of genetic concepts in PCG patients/parents.
- To evaluate acceptance of genetic screening and prevention methods.
- To inform the development of a PCG prevention program.
Main Methods:
- Cross-sectional study of 100 adult PCG patients/parents.
- Structured telephone interviews post-genetic counseling.
- Assessment of understanding of genetic risks and screening acceptance.
Main Results:
- High awareness (93%) of consanguinity risk and carrier status (87%).
- One-third struggled with recurrence risk comprehension.
- Strong support for prenatal genetic screening (61%) and preimplantation genetic diagnosis (78%).
Conclusions:
- PCG patient/parent knowledge of basic genetics is generally good.
- Targeted education on recurrence risks is needed.
- High acceptance of genetic screening supports implementing a PCG prevention program.
Abstract:
This cross-sectional study evaluated the knowledge and understanding of basic genetic concepts, as well as the acceptance of screening and preventive measures, among 100 adult patients and/or parents of children with primary congenital glaucoma (PCG) at King Khalid Eye Specialist Hospital. The study population included 36 males and 64 females. Following genetic counseling sessions for participants who had received genetic test results, an assessment was conducted using structured telephone interviews. Parents and adult patients generally demonstrated an understanding of autosomal recessive conditions: 93% recognized the increased genetic risk associated with consanguinity, and 87% were aware that an unaffected individual may be a carrier of the mutation. However, approximately one-third still had difficulty understanding or recalling recurrence risks. There was moderate-to-high motivation among participants to engage in preventive actions. While 61% supported prenatal genetic screening (PGS), 78% expressed willingness to use preimplantation genetic diagnosis (PGD) to avoid having an affected child; reinforcing the need to fast-track a congenital glaucoma prevention program. Such an initiative would facilitate the identification of carriers prior to marriage, enabling informed decision-making regarding pregnancy management.
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