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Online ISSN
1305-3124

Established
1993

Editors-in-Chief
​Cihat Şen, ​Nicola Volpe

Editors
Daniel Rolnik, Mar Gil, Murat Yayla, Oluş Api

Statistics Editor
Resul Arısoy

Article info

Harlequin fetus in a twin sibling: a rare case report. Perinatal Journal 2021;29(3):- DOI: 10.2399/prn.21.0293012

Author(s) Information

Rabia Merve Palalıoğlu1,
Halil Ibrahim Erbıyık2,
Aytakin Mahammadaliyeva1,
Batuhan Palalıoğlu3,
Rojda Bayar4

  1. Department of Obstetrics and Gynecology, University of Health Sciences Ümraniye Training and Research Hospital, Istanbul, Turkey
  2. Üsküdar University Operation Room Services, Istanbul, Turkey
  3. Department of Pediatrics, University of Health Sciences Ümraniye Training and Research Hospital, Istanbul, Turkey
  4. Department of Midwifery, Faculty of Health Sciences, Aydın Adnan Menderes University, Aydın, Turkey
Correspondence

Rabia Merve Palalıoğlu, Department of Obstetrics and Gynecology, University of Health Sciences Ümraniye Training and Research Hospital, Istanbul, Turkey, [email protected]

Publication History

Manuscript Received: June 21, 2021

Manuscript Accepted: August 07, 2021

Earlyview Date: September 06, 2021

Conflicts of Interest

No conflicts declared.

Objective
Ichthyosis is a heterogeneous group of disorders characterized by hereditary keratinization of the skin. Ichthyosis means “fish skin.” There are at least 20 different types of ichthyosis. Among these, Harlequin-type ichthyosis is a rare, but often fatal, special form of congenital ichthyosis. Rates are higher in certain populations with higher probability of inbreeding. Babies are born with parchment-paper-like transparent membrane covering the whole body. Complications such as dehydration, prematurity, sepsis, electrolyte imbalance, and pneumonia could occur, adversely affecting survival.
Case(s)
We presented an ichthyosis case born from a dizygotic pregnancy of a Syrian woman living as a refugee in Turkey. Despite all the medical procedures performed in the neonatal intensive care unit, the baby who was diagnosed with Harlequin type ichthyosis died on the second postpartum day.
Conclusion
Few cases of ichthyosis in twins have been reported. It is very important to benefit from prenatal screening and genetic counseling in the early diagnosis of such inherited, rare and fatal diseases.
Keywords

ABCA12 gene, autosomal recessive, congenital ichthyosis, eclabium, ectropion, Harlequin-type ichthyosis, keratinization disorders, twin pregnancy

Introduction
Harlequin-type ichthyosis (HI) is a serious and fatal form of congenital ichthyosis. It is an autosomal recessive genetic disorder that controls the desquamation process in the 2nd chromosome and causes a defect in lipid transport, resulting from a mutation in the adenosine triphosphate (ATP) binding cassette A12 (ABCA12) gene (1). Its overall incidence is 1 in 300,000 births (2). It is the most severe form of congenital ichthyosis characterized by extensive fissure and various degrees of cutaneous malformations. Since the body surface is covered with dense keratinized skin, the protective feature of the skin is impaired and the tendency to infection increases. Restriction of breathing causes hypoventilation and respiratory failure. Ectropion, eclabium, flattening of the ears, deformity of the fingers and auto amputation, hypo or hyperthermia, electrolyte imbalances, severe skin and lung infections are among the causes of death in the first days of life (1, 3). The survival rate is inversely proportional to the severity of the disease (4). Today, the life expectancy and quality of these babies are extended in neonatal intensive care units, primarily with retinoid treatments. (5). Our main goals in presenting this case are to emphasize the antenatal diagnosability, avoid complications associated with the disease, the need to initiate timely and appropriate treatment to combat these complications, and emphasize that  ichthyosis is rare in twin pregnancies. Patient written consent was obtained for all the results of the mother and baby to be used in this case report.
Case(s)
A 27-year-old patient with gravida 5, para 3, and a twin pregnancy at 33 weeks of gestation was admitted to our University of Health Sciences Umraniye Training and Research Hospital emergency gynecology unit at 10:10 a.m. on 05.28.2020 with the complaint of “pain”. It was learned that the patient had no antenatal follow-up, and no ultrasonography was performed. Previous deliveries were performed by normal vaginal route. In vaginal examination, the cervix was dilated 7–8 cm, 60% effaced, and the poche was intact. Ultrasound scan revealed that fetus 1 was positioned head-first and fetus 2 anus-first. The patient, who was admitted to the delivery room, was strained simultaneously with contractions. Spontaneous vaginal delivery was performed at 10:20 a.m. within 7 minutes. The first baby was delivered head-first. The premature baby had an appearance, pulse, grimace, activity, and respiration (APGAR) score of 4–5; sex was female, and her weight was 1,430 g. She did not cry immediately at birth and spontaneous breathing did not occur. Physical examination revealed adherent vernix on the baby's face, ears, and neck and a large skin thickening with a common collodion-like coating over the whole body. This thickening was split into deep fissures, and skin peeling (Figure 1). A typical appearance resembling a clown smile on the face (Figure 2), erosion on the nasal cartilage, nasal hypoplasia, and open-mouth findings were present. Hyperkeratosis pattern, hypoplastic ear, contracture and deformation findings in the fingers and toes, and rudimentary appearance in the urogenital region were observed. With these findings, the patient was diagnosed with Harlequin-type ichthyosis and was intubated in the delivery room. The second baby was delivered foot-first at 10:23 a.m. APGAR score was 4–6; sex was male; weight was 1,620 g. No congenital anomaly was found in the 2nd baby (as observed in the 1st baby). Both babies were taken to the neonatal intensive care unit.
During the period of hospitalization in the intensive care unit, the baby with HI was started on intravenous fluid prevent dehydration and fed with parenteral nutrition. The baby was wrapped in sterile covers to avoid infection. The skin was dressed with moisturizers and antibiotic ointments, and debridement was performed. However, the first baby whose general condition worsened despite the treatments died from sepsis and respiratory failure 2 days after birth. In the puerperal examination of the mother, her general condition was good, vitals stable, and uterus contracted. Further, the endometrial cavity was observed as regular in the control ultrasonographic examination. In her vaginal examination, no episiotomy or dehiscence was observed. Lochia rubra was natural in appearance. The follow-up of the mother was resumed in the service, and the care process continued. Postpartum discharge training was given by doctors and midwives 24 hours after birth. Gynecological emergencies were explained, and the mother was discharged. The study’s registration /ethics committee approval was unnecessary due to the nature of the study.
Discussion
Harlequin-type ichthyosis, also known as congenital ichthyosis or keratosis diffusa fetalis, is a very rare genetic disorder that develops as a result of a mutation of the gene ABCA12, which causes defect in the lipid transport, and results in the thickening of keratin layer of the skin (hyperkeratosis A) (1). The first Harlequin case was reported in 1750, and it started to be diagnosed antenatally in 1983 (6, 7). Approximately 200 cases have been reported worldwide (8). There is a pattern of autosomal recessive inheritance indicating that the role of kinship among parents is a contributing factor. Perinatal diagnosis is important for the early diagnosis of the disease. Among the sonographic findings used in the prenatal diagnosis of Harlequin ichtyosis; There are severe deformity of the eyelids and protrusion of the conjunctiva, excessive edema in the extremities, IUGR, polyhydramnios, cracks and clefts in the skin, short fingers, flat nose, constantly open mouth, undeveloped flat outer ears. However, in our case, sonographic imaging could not be obtained because there was no antenatal follow-up. (7). Chorionic villus sampling or amniocentesis (fetal DNA) is recommended for suspected cases during examinations and also for women with previously affected babies. Skin biopsy is not currently recommended for prenatal diagnosis (9).In addition, it is important to ask for a detailed description of family history, kinship among parents, information about previous pregnancies, and whether other children have any inherent dermatological conditions. Our case could not be evaluated in terms of diagnosis in the perinatal period because she was a Syrian pregnant woman without follow-up and without any antenatal screening. The diagnosis was made by the characteristic rough physical appearance of the baby after birth. Babies with HI are usually born prematurely. This means that the prematurity complications will also tend to evolve.Patients with HI should be followed up in fully equipped intensive care units with a multidisciplinary approach. Moisturizing the skin frequently in order to prevent fluid loss, using incubators with humidity adjustments, compliance with hygiene standards, appropriate fluid treatment, maintaining heat balance, and protection from infection are the main factors to be considered in the treatment. The skin needs softening due to its structure. Because of the high loss of water that occurs in the cases of this disease, dryness causes the skin to stretch and harden like an armor. Mucosal surface and visceral organs are usually preserved (10). In the present case, the baby affected by the disease was born prematurely and had typical HI symptoms. HI mortality rate is 75% (4), and most babies die in the first days of life due to secondary complications such as severe fluid loss, deterioration in heat balance, infection, and dehydration (11). In the present case, the baby died due to similar reasons. Cases of ichthyosis developing in twin pregnancies are rarely encountered in the literature, and it is rarely seen that one baby is healthy while the other has ichthyosis. Very few cases have been reported with a similar result to our case (12). However, the chances of survival of fetuses with this condition are known to be related to the type of mutation. Babies with compound heterozygous mutations survive more than those with homozygous mutations (11, 13). Postpartum treatments and care improve the prognosis of the disease. In our case, the pathological examination of the baby could not be performed as we could not obtain the parents’ consent. With supportive care, the quality of life of babies improves, and the survival rate rises >50%. In addition to routine care such as controlling the vital signs, babies with HI must be kept in a warm and humid incubator, and their hydration must be maintained. Parents could be informed about the possible damages of consanguineous marriages through genetic counseling. It also enables early prenatal evaluation and diagnosis. Families may be offered the option of termination. In terms of reducing the problems and maintaining the quality of care, it is important that physicians and midwives who work in primary care provide necessary pre-marital counseling to families (14, 15). In our case, the fact that the patient was not followed up and did not benefit from any counseling service supports the results of this case.
Conclusion
Prenatal diagnosis is very important in genetically transmitted fatal diseases. Diagnosis of HI in the prenatal period is easy with ultrasonographic examination and ABCA12 gene mutation screening. Thus, the termination option will be possible. Genetic counseling is very important for families with consanguineous marriages who give a history of infants with HI for this serious disease that cannot be prevented and has no definitive treatment.
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File/Dsecription
Figure 1
Physical examination revealed adherent vernix on the baby's face, ears, and neck and a large skin thickening with a common collodion-like coating over the whole body. This thickening was split into deep fissures, and skin peeling.
Figure 2
A typical appearance resembling a clown smile on the face, erosion on the nasal cartilage, nasal hypoplasia, and open-mouth findings were present.