• Disease Overview
  • Synonyms
  • Signs & Symptoms
  • Causes
  • Affected Populations
  • Disorders with Similar Symptoms
  • Standard Therapies
  • Clinical Trials and Studies
  • References
  • Programs & Resources
  • Complete Report

Renal Agenesis, Bilateral


Last updated: December 22, 2021
Years published: 1990, 1999, 2007

Disease Overview

Bilateral Renal Agenesis is the absence of both kidneys at birth. It is a genetic disorder characterized by a failure of the kidneys to develop in a fetus. This absence of kidneys causes a deficiency of amniotic fluid (Oligohydramnios) in a pregnant woman. Normally, the amniotic fluid acts as a cushion for the developing fetus. When there is an insufficient amount of this fluid, compression of the fetus may occur resulting in further malformations of the baby.

This disorder is more common in infants born of a parent who has a kidney malformation, particularly the absence of one kidney (unilateral renal agenesis). Studies have proven that unilateral renal agenesis and bilateral renal agenesis are genetically related.

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  • Kidney Agenesis
  • Renal Agenesis
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Signs & Symptoms

Bilateral renal agenesis is characterized by the absence of kidneys and of urine in a baby. The face usually consists of wide-set eyes; a “parrot beak” nose; a receding chin, and large low set ears deficient in cartilage. Other symptoms may include excess and dehydrated skin, a prominent fold at the corner of each eye, the facial expression of an older infant, and deformities of the hands and feet.

Premature labor, breech delivery and a disproportionately low birthweight are often associated with bilateral renal agenesis. The baby may also have multiple malformations including in females the absence of a uterus and upper vagina, or in males an absence of seminal vesicles and spermatic duct. Gastro-intestinal malformations such as the absence of a rectum, esophagus and duodenum may also occur. Symptoms may further include the presence of only a single umbilical artery, and major deformities of the lower part of the body and the lower limbs.

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Bilateral renal agenesis is an autosomal dominant genetic disorder. Human traits, including the classic genetic diseases, are the product of the interaction of two genes, one received from the father and one from the mother. In dominant disorders, a single copy of the disease gene (received from either the mother or father) will be expressed “dominating” the other normal gene and resulting in the appearance of the disease. The risk of transmitting the disorder from affected parent to offspring is 50 percent for each pregnancy regardless of the sex of the resulting child.

Bilateral renal agenesis tends to occur when at least one parent has a kidney malformation or the absence of a kidney (unilateral kidney agenesis).

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Affected populations

Bilateral renal agenesis is found in male infants more frequently than females. It tends to occur in the children of parents having kidney abnormalities. It is a very rare disorder.

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Standard Therapies

Treatment of bilateral renal agenesis is symptomatic and supportive.

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Clinical Trials and Studies

Information on current clinical trials is posted on the Internet at www.clinicaltrials.gov All studies receiving U.S. government funding, and some supported by private industry, are posted on this government web site.

For information about clinical trials being conducted at the NIH Clinical Center in Bethesda, MD, contact the NIH Patient Recruitment Office:

Tollfree: (800) 411-1222
TTY: (866) 411-1010
Email: [email protected]

Some current clinical trials also are posted on the following page on the NORD website:

For information about clinical trials sponsored by private sources, contact:

For information about clinical trials conducted in Europe, contact:

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Welling LW, Grantham JJ, Cystic and developmental diseases of the kidney. In: Brenner BM, Rector Jr, FC, eds. The Kidney. 4th ed. Philadelphia, Pa: W.B. Saunders Company; 1991:1657-94.

Jones KL, Smith’s Recognizable Patterns of Human Malformation. 5th ed. Philadelphia, PA: W.B. Saunders Company; 1997:632-33.


Latini JM, et al., Prenatal failure to visualize kidneys: a spectrum of disease. Urology. 1998;52:306-11.

Georgieff MK, et al., Liver and brain iron deficiency in newborn infants with bilateral renal agenesis (Potter’s syndrome). Pediatr Pathol Lab Med. 1996;16:50919.

Sepulveda W, et al., Accuracy of prenatal diagnosis of renal agenesis with color flow imaging in severe second-trimester oligohydramnios. Am J Obstet Gynecol. 1995;173:1788-92.

Kuller JA, et al., Prenatal diagnosis of renal agenesis in a twin gestation. Prenat Diagn. 1994;14:1090-92.

Newbould MJ, et al., Oligohydramnios sequence: the spectrum of renal malformations. Br J Obstet Gynaecol. 1994;101:598-604.

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Programs & Resources

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NORD strives to open new assistance programs as funding allows. If we don’t have a program for you now, please continue to check back with us.

Additional Assistance Programs

MedicAlert Assistance Program

NORD and MedicAlert Foundation have teamed up on a new program to provide protection to rare disease patients in emergency situations.

Learn more https://rarediseases.org/patient-assistance-programs/medicalert-assistance-program/

Rare Disease Educational Support Program

Ensuring that patients and caregivers are armed with the tools they need to live their best lives while managing their rare condition is a vital part of NORD’s mission.

Learn more https://rarediseases.org/patient-assistance-programs/rare-disease-educational-support/

Rare Caregiver Respite Program

This first-of-its-kind assistance program is designed for caregivers of a child or adult diagnosed with a rare disorder.

Learn more https://rarediseases.org/patient-assistance-programs/caregiver-respite/

Patient Organizations

No patient organizations found related to this disease state.

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