Prenatal Diagnosis of Holoprosencephaly
- Includes Ultrasound and MRI images of HPE.
- http://www.ijri.org/text.asp?2000/10/2/93/30610

Holoprosencephaly: Alobar
- Case study of first trimester HPE diagnosis. Includes ultrasound images.
- http://www.thefetus.net/page.php?id=115

Birth Defects Risk Factor Series - Holoprosencephaly
- Details of research into the causes and risk factors for holoprosencephaly. Provided by Texas Department of State Health Services.
- http://www.dshs.state.tx.us/birthdefects/risk/risk5-holoprosencephaly.shtm

West Midlands Congenital Anomaly Register: Holoprosencephaly
- Information from conception to the first 2 years of life on the occurrence of suspected and confirmed Holoprosencephaly within this region of the UK.
- http://www.perinatal.nhs.uk/car/anomaly/cns/holoprosencephaly.htm

Agnathia-Holoprosencephaly
- Information including images and case report on lethal and rare form of HPE.
- http://www.thefetus.net/page.php?id=191

Holoprosencephaly-hypokinesia syndrome
- Case Study of Morse Syndrome.
- http://www.thefetus.net/page.php?id=429

NINDS: Holoprosencephaly
- Information sheet compiled by the National Institute of Neurological Disorders and Stroke.
- http://www.ninds.nih.gov/disorders/holoprosencephaly/holoprosencephaly.htm

GeneReviews: Holoprosencephaly Overview
- Includes details of prevalence, causes and management.
- http://www.geneclinics.org/profiles/hpe-overview/

Developmental Biology Online: Holoprosencephaly
- Includes photographs and diagrams of HPE development.
- http://www.devbio.com/article.php?ch=21&id=256

Carter Centers for Brain Research in Holoprosencephaly
- Research center into the causes of HPE. Also information and support for families of those affected.
- http://www.stanford.edu/group/hpe/