Skip to main content

Wolman’s disease presenting with secondary hemophagocytic lymphohistiocytosis: a case report from Saudi Arabia and literature review

Abstract

Background

Hemophagocytic lymphohistiocytosis (HLH) is a rare and potentially fatal syndrome that is characterized by strong activation of the immune system from hyperinflammatory cytokines. Symptoms of HLH patients include fever, hepatosplenomegaly, cytopenia, and hyperferritinemia. Inherited HLH is classified as primary, whereas secondary HLH (sHLH) occurs when acquired from non-inherited reasons that include severe infection, immune deficiency syndrome, autoimmune disorder, neoplasm, and metabolic disorder. Wolman’s disease (WD) is a rare and fatal infantile metabolic disorder caused by lysosomal acid lipase deficiency, that exhibits similar clinical signs and symptoms as HLH. This paper reports the case of an infant diagnosed with WD and who presented with sHLH.

Case presentation

A 4-month-old infant presenting with hepatosplenomegaly, failure to thrive, and other abnormalities. WD diagnosis was confirmed by the presence of the LIPA gene homozygous deletion c.(428 + 1_967-1)_(*1_?)del. The infant also met the HLH-2004 diagnostic criteria.

Conclusions

Metabolic disorder such as WD should be investigated in infants fulfilling the HLH criteria to diagnose the underlying condition. More studies are needed to understand the link between WD and sHLH and to identify appropriate therapies.

Peer Review reports

Background

Hemophagocytic lymphohistiocytosis (HLH) is a hyperinflammatory syndrome and one of the most aggressive life-threatening disorders in pediatric hematology. The pathophysiological hallmark of the disorder is a defect in cytotoxic immune function resulting in uncontrolled immune activation, and subsequently systemic hypercytokinemia and widespread organ damage. HLH is characterized by various nonspecific clinical and laboratory abnormalities resembling different disorders. The most common signs and symptoms of HLH are prolonged high fever, hepatosplenomegaly, cytopenia, and laboratory abnormalities including elevated ferritin, triglycerides, transaminases, bilirubin, and lactate dehydrogenase and low fibrinogen [1].

Historically, HLH was classified into two major groups: primary and secondary. Primary HLH is subdivided into two genetically diagnosed sub-groups comprising familial HLH and inherited immune deficiency syndromes. Secondary HLH (sHLH) can be seen in severe infections, rheumatologic disorders, primary immune deficiencies, malignancies, and metabolic disorders. Recently, the North American Consortium for Histiocytosis suggested broader classification of HLH to include other causes of sHLH such as HLH with negative genetic abnormalities and no specific secondary cause, or HLH observed after immune activation (iatrogenic HLH) [2]. As the clinical characteristics of primary HLH cannot be distinguished from sHLH, the diagnosis of HLH is challenging. It is based on molecular diagnosis or presence of five out of eight of HLH-2004 diagnostic criteria which had been created for HLH-1994 trial then modified in HLH-2004 trial [3, 4].

Treatment of HLH is critical and should be started as early as possible to prevent irreversible organ damage. Based on the HLH-2004 trial, the conventional treatment of HLH consists of a potent immunosuppressant (dexamethasone), chemotherapy (etoposide), and standard of care. After remission, the only curative treatment of HLH is allogeneic hematopoietic stem cell transplant (HSCT) which showed improved overall patient survival [5].

Lysosomal acid lipase (LAL) deficiency is a rare, autosomal recessive, and fatal disease characterized by reduced or absent of LAL enzyme activity resulting from mutations in the gene encoding lysosomal acid lipase (LIPA). Consequently, the metabolism of cholesteryl esters and triglycerides is impaired. Wolman’s disease (WD) is the infantile form of LAL deficiency [6]. WD patients present with vomiting, diarrhea, increased bilirubin concentration, failure to thrive, hepatosplenomegaly, dyslipidemia, adrenal insufficiency, and hepatic failure. Abdominal X-ray in patients with WD shows bilateral adrenal calcification and the liver biopsy characteristically reveals cholesteryl ester deposits in Kupffer cells [6, 7]. Measurement of LAL enzyme in leucocytes or molecular testing of LIPA gene mutations confirms the diagnosis of WD. HSCT and enzyme replacement therapy (ERT) are among the management approaches of WD. Sebelipase alfa is a recombinant human LAL that has been used recently for WD and showed significant improvement in survival and disease symptoms [7].

WD is considered an underlying cause of sHLH where both disorders share common manifestations [8]. Here, we describe the case of a Saudi male infant from first-degree consanguineous parents, who presented with WD and whose condition was subsequently complicated by sHLH. Additionally, alternative cases of WD associated with sHLH that are reported in the literature are reviewed and discussed.

Case presentation

We report the case of a 4-month-old male infant born full-term after a complicated pregnancy with emergency cesarean section for fetal bradycardia during labor. His Apgar score was 5, 7, and 10 at 1, 5, and 10 minutes, respectively and he stayed 2 days for observation in the neonatal intensive care unit. He is a child of first-degree related Saudi parents. Growth parameters at birth were normal with a weight of 3,250 g, length of 50 cm, and head circumference of 36 cm. At the age of 6 weeks, he needed few days of inpatient care to manage urinary tract infection associated with influenza infection. During an outpatient visit, he was observed to be pale with failure to thrive for an infant of 3 months old. In spite of good oral intake, his weight was 3,700 g, length was 52 cm, and head circumference was 37.5 cm. Based on the child growth standards of the World Health Organization, both weight and length were markedly below the 3rd centile. On physical examination, the infant was active without any apparent dysmorphic features. However, distended abdomen with dilated veins, hepatomegaly (liver span of 8 cm), splenomegaly of 4 cm below costal margin, loss of subcutaneous fat, and reduced muscle bulk were observed. While investigating his failure to thrive, pallor, and organomegaly, the laboratory and radiological work-up showed the following abnormalities (Table 1): severe microcytic anemia, hypothyroidism, elevated serum triglyceride level, hepatosplenomegaly, and osteopenia with bilateral punctuated adrenal calcification which appeared on radiological skeletal survey (Fig. 1).

Fig. 1
figure1

Plain abdominal X-ray showing bilateral adrenal calcification

Cardiac evaluation by echocardiography showed normal heart function. Additionally, while waiting the confirmatory genetic testing, the diagnosis of WD was supported by LAL deficiency where a dried blood spot which showed a very low LAL level.

A deletion/duplication genetic analysis by real-time quantitative PCR (qPCR) confirmed the presence of homozygous deletion c.(428 + 1_967-1)_(*1_?)del in the LIPA gene (NM_000235.3; chr.10): (OMIM 613,497). Real-time qPCR amplification (Rotor-Gene Q, QIAGEN, Germany) was done using target gene specific primers. Gene target regions were selected according to the alterations described in the HGMD database, when applicable [HGMD Professional]. The analysis of each fragment was performed in triplicate and by comparison with 4 different normal sample pools. Copy number alterations were calculated according to the Delta Delta Ct method (2^-ΔΔCt), using LIPA (NM_000235.3; chr.10): Exons 2, 4 and 10 (or part of the exon) as the reference gene. The detected variant was a homozygous deletion that included, at least, the exons 9 and 10 of the LIPA gene. This variant is not described in the literature; however, other deletions have been reported in patients with WD [9, 10]. Based on the available information, this deletion should be classified as a likely pathogenic variant. The enzyme assay was very low which confirms the variant pathogenicity. Genetic testing for the parents was requested to confirm the heterozygous status for genetic counselling.

Table 1 Laboratory findings on initial presentation and at time of sHLH diagnosis

The condition of the infant was managed with supportive care including packed red blood cell transfusion. Although initiation of ERT had been planned,, the medication was not accessible due to limited availability. After the infant condition had been stabilized, he went home on low-fat special formula.

The infant presented at the age of 4 months with prolonged fever, yellow body discoloration, lethargy, and poor oral intake. Physical examination showed the presence of fever and jaundice in an inactive infant with worsening failure to thrive and hepatosplenomegaly. Laboratory findings revealed pancytopenia, elevated liver enzymes, worsening hypertriglyceridemia, hyperferritinemia, and low fibrinogen level (Table 1). Viral polymerase chain reaction (PCR) for Epstein–Barr virus (EBV), cytomegalovirus (CMV), and adenovirus, and serology for hepatitis B, C, and D were reported to be negative. Blood culture was positive for Staphylococcus aureus which was flucloxacillin sensitive. Testing for soluble CD25 level and natural killer cell activity was not available in our institution. In addition to broad-spectrum antibiotics therapy, supportive care including blood transfusion was initiated during the diagnostic work-up. Diagnostic surveillance for immune deficiency and rheumatological disorders revealed absence of hypogammaglobinemia and normal level of anti-nuclear antibodies respectively. Bone marrow aspirate excluded the presence of malignancy and showed the presence of extensive foamy histiocytes with evidence of hemophagocytosis (Fig. 2).

Fig. 2
figure2

Bone marrow aspirate showing evidence of hemophagocytosis

After the infant fulfilled the criteria of HLH, specific treatment according to HLH-2004 protocol was initiated which included dexamethasone 10 mg/m2 daily, intravenous immunoglobulin 0.5 g/kg, and cyclosporine 6 mg/kg daily with the exception of etoposide. The infant suffered from venous access difficulty. His condition deteriorated because of refractory thrombocytopenia which required platelets transfusion every few hours to improve platelets count and prevent bleeding during invasive procedure for central line insertion. After the failure of HLH-2004 protocol therapy and because of venous access difficulty, subcutaneous anti-interleukin-1 (anakinra 10 mg/kg twice per day) was initiated. Despite 7 days of the aforementioned treatment, HLH parameters continued to deteriorate in terms of fever, pancytopenia, worsening transaminitis, hyperferritinemia, and hypofibrinogenemia. Additionally, a treatment with 3 doses of etoposide each 150 mg/m2 over 10 days instead of anakinra failed to show any improvement. The infant condition progressed to multiorgan failure including liver failure, refractory cytopenia, coagulopathy, and respiratory failure. Unfortunately, the infant died despite the support and intensive therapy provided to manage his condition.

Discussion and conclusions

Our patient clearly fulfilled the HLH-2004 diagnostic criteria after being diagnosed with WD, based on deficient LAL enzyme. The discovered mutation is novel. Similar to other cases that reported WD and sHLH, the infant showed refractory response to multiple therapies. Including our patient, 11 cases of WD associated with sHLH were reported (Table 2) [11,12,13,14,15,16,17]. WD is likely to be underestimated since it is fatal before the likely reorganization of sHLH. Most of WD patients with sHLH are few months old infants and from Middle Eastern communities. Being mostly infants, patients with WD and sHLH might be misdiagnosed with familial HLH without underlying WD, especially that the clinical manifestations are similar in both disorders. Early in the disease, patients with HLH may not meet the full HLH-2004 diagnostic criteria making the diagnosis more difficult [2, 5]. Failure to thrive and huge enlargement of spleen and liver were reported in all patients. Spleen and liver are more enlarged in patients with WD and sHLH compared to familial HLH which might be secondary to the presence of double pathology (lipid storage in addition to excessive immune activation). Failure to thrive, huge organomegaly, and adrenal calcification are likely to be useful in order to suspect underlying WD in infants with HLH.

Table 2 Reported cases of patients with WD and sHLH

In addition to WD, inborn errors of metabolism such as galactosemia, lysinuric protein intolerance, Gaucher disease, Niemann-Pick disease, methylmalonic acidemia, propionic acidemia, and other disorders have been reported to fulfill the diagnostic criteria of HLH. Whether these disorders should be considered as mimics of HLH disease or have developed immune hyperactivation is unknown. Indeed, the pathophysiology of sHLH in the context of metabolic disorders is not well studied. However, abnormal immune regulation may explain the features of some metabolic disorders [2]. The pathogenic association between the two disorders is not well established as the hyperinflammatory reaction manifested in patients with HLH may be mediated by various triggers. A suggested, trigger of sHLH in metabolic disorders is the induction of inflammation and subsequently macrophage activation by increased metabolites such as cholesteryl ester crystals in WD [14].

Although some reported cases did not describe which specific treatment was provided, the HLH-2004 protocol treatment modality (supportive care with chemotherapy followed by HSCT), has been shown to be associated with inconclusive treatment outcomes and morality rate improvement in WD with sHLH patients. None of the reported studies has used ERT. Due to the advanced patient’s condition, the outcome of ERT was likely to be limited. However, more studies are needed to identify the ability of ERT to prevent HLH complication in WD. In addition to associated significant toxicities, the efficacy of conventional regimens in HLH treatment is limited [18, 19]. More understanding of immune dysfunction in HLH, along with the need for better treatment outcomes, have currently placed targeted therapies under trial. Recently, emapalumab (a monoclonal antibody directed against interferon-gamma) has been shown to be safe and effective in treating progressive, recurrent or refractory primary HLH or cases who are intolerant to conventional treatment [20]. Clinical trials studying the efficacy of emapalumab in treating sHLH are currently ongoing. The success of emapalumab in treating sHLH can be a key factor for managing patients with WD and sHLH.

To conclude, our review confirms the severe or fatal outcome associated with HLH and underlying WD. A High index of suspicion and special precautions are required to identify underlying metabolic conditions such as WD in a patient presenting with HLH. Absence of evidence of familial HLH in infants with HLH should initiate metabolic work up. More studies are needed to understand the link between metabolic disorders and sHLH and to identify the best appropriate treatment for sHLH in patients with WD.

Availability of data and materials

The datasets generated and/or analysed during the current study are available in the Ensembl genome browser / repository, [https://nov2020.archive.ensembl.org/Homo_sapiens/Share/22fa807b673d90e7f331c8f6fb46618c?redirect=no;mobileredirect=no].

Abbreviations

ALC:

Absolute lymphocyte count

ALP:

Alkaline phosphate

ALT:

Alanine transaminase

ANC:

Absolute neutrophil count

AST:

Aspartate transaminase

CMV:

Cytomegalovirus

EBV:

Epstein–Barr virus

ERT:

Enzyme replacement therapy

GGT:

Gamma-glutamyl transpeptidase

HLH:

Hemophagocytic lymphohistiocytosis

HSCT:

Hematopoietic stem cell transplant

LAL:

Lysosomal acid lipase

NA:

Not applicable

NR:

Not reported

PCR:

Polymerase chain reaction

sHLH:

Secondary hemophagocytic lymphohistiocytosis

WBC:

White blood cell

WD:

Wolman’s disease

References

  1. 1.

    Janka GE, Lehmberg K. Hemophagocytic lymphohistiocytosis: pathogenesis and treatment. Hematology. 2013;2013(1):605–11.

    Article  Google Scholar 

  2. 2.

    Jordan MB, Allen CE, Greenberg J, Henry M, Hermiston ML, Kumar A, et al. Challenges in the diagnosis of hemophagocytic lymphohistiocytosis: Recommendations from the North American Consortium for Histiocytosis (NACHO). Pediatr Blood Cancer. 2019;66(11):e27929.

    Article  Google Scholar 

  3. 3.

    Henter JI, Samuelsson-Horne A, Arico M, Egeler RM, Elinder G, Filipovich AH, et al. Treatment of hemophagocytic lymphohistiocytosis with HLH-94 immunochemotherapy and bone marrow transplantation. Blood. 2002;100(7):2367–73.

    CAS  Article  Google Scholar 

  4. 4.

    Henter JI, Horne A, Aricó M, Egeler RM, Filipovich AH, Imashuku S, et al. HLH-2004: diagnostic and therapeutic guidelines for hemophagocytic lymphohistiocytosis. Pediatric blood cancer. 2007;48(2):124–31.

    Article  Google Scholar 

  5. 5.

    Marsh RA, Haddad E. How I treat primary haemophagocytic lymphohistiocytosis. Br J Haematol. 2018;182(2):185–99.

    Article  Google Scholar 

  6. 6.

    Pericleous M, Kelly C, Wang T, Livingstone C, Ala A. Wolman’s disease and cholesteryl ester storage disorder: the phenotypic spectrum of lysosomal acid lipase deficiency. The lancet Gastroenterology hepatology. 2017;2(9):670–9.

    Article  Google Scholar 

  7. 7.

    Erwin AL. The role of sebelipase alfa in the treatment of lysosomal acid lipase deficiency. Therapeutic advances in gastroenterology. 2017;10(7):553–62.

    CAS  Article  Google Scholar 

  8. 8.

    Althonaian N, Alsultan A, Morava E, Alfadhel M. Secondary hemophagocytic syndrome associated with COG6 gene defect: report and review. JIMD Reports. 2018;42:105–11.

    Article  Google Scholar 

  9. 9.

    Lee TM, Welsh M, Benhamed S, Chung WK. Intragenic deletion as a novel type of mutation in Wolman disease. Mol Genet Metab. 2011;104(4):703–5.

    CAS  Article  Google Scholar 

  10. 10.

    Ghosh A, Schlecht H, Heptinstall LE, Bassett JK, Cartwright E, Bhaskar SS, et al. Diagnosing childhood-onset inborn errors of metabolism by next-generation sequencing. Arch Dis Child. 2017;102(11):1019–29.

    Article  Google Scholar 

  11. 11.

    Al Essa M, Nounou R, Sakati N, Le Quesne G, Joshi S, Archibald A, et al. Wolman’s disease: The King Faisal Specialist Hospital and Research Centre experience. Ann Saudi Med. 1998;18(2):120–4.

    CAS  Article  Google Scholar 

  12. 12.

    Perry R, Kecha O, Paquette J, Huot C, Van Vliet G, Deal C. Primary adrenal insufficiency in children: twenty years experience at the Sainte-Justine Hospital, Montreal. The Journal of Clinical Endocrinology Metabolism. 2005;90(6):3243–50.

    CAS  Article  Google Scholar 

  13. 13.

    Rabah F, Al-Hashmi N, Beshlawi I. Wolman’s disease with secondary hemophagocytic lymphohistiocytosis. Pediatric hematology oncology. 2014;31(6):576–8.

    CAS  Article  Google Scholar 

  14. 14.

    Taurisano R, Maiorana A, De Benedetti F, Dionisi-Vici C, Boldrini R, Deodato F. Wolman disease associated with hemophagocytic lymphohistiocytosis: attempts for an explanation. Eur J Pediatr. 2014;173(10):1391–4.

    Article  Google Scholar 

  15. 15.

    Elsayed S, Elsobky E, Tantawy A, Ragab E, Gil M, Lambert N, et al. Wolman disease in patients with familial hemophagocytic lymphohistiocytosis (FHL) negative mutations. Egyptian Journal of Medical Human Genetics. 2016;17(3):277–80.

    Article  Google Scholar 

  16. 16.

    Yavaş AK, Orhaner B, Genç P, Kılıç N, Erdoğan H, Özdemir Ö, et al. Secondary hemophagocytic lymphohistiocytosis in an infant with Wolman disease. Turkish Journal of Hematology. 2017;34(3):264.

    Google Scholar 

  17. 17.

    Tinsa F, Ben Romdhane M, Boudabous H, Bel Hadj I, Brini I, Tebib N, et al. A novel mutation c. 153 C > A in a Tunisian girl with Wolman disease and unusual presentation: hemophagocytic lymphohistiocytosis. Journal of Pediatric Hematology/Oncology. 2019;41(3):e193-6.

    Article  Google Scholar 

  18. 18.

    Bergsten E, Horne A, Aricó M, Astigarraga I, Egeler RM, Filipovich AH, et al. Confirmed efficacy of etoposide and dexamethasone in HLH treatment: long-term results of the cooperative HLH-2004 study. Blood. 2017;130(25):2728–38.

    CAS  Article  Google Scholar 

  19. 19.

    Yanagisawa R, Nakazawa Y, Matsuda K, Yasumi T, Kanegane H, Ohga S, et al. Outcomes in children with hemophagocytic lymphohistiocytosis treated using HLH-2004 protocol in Japan. Int J Hematol. 2019;109(2):206–13.

    CAS  Article  Google Scholar 

  20. 20.

    Vallurupalli M, Berliner N. Emapalumab for the treatment of relapsed/refractory hemophagocytic lymphohistiocytosis. Blood. 2019;134(21):1783–6.

    Article  Google Scholar 

Download references

Acknowledgements

The authors acknowledge the infant and his family, and the healthcare professionals at the affiliation center. They also thank Racha Aaraj, Pharm D, MSc, MPH and Mohammad Yassine, BPharm, MSc for their editorial assistance for the preparation of this manuscript.

Funding

The authors retained the editorial process, including the discussion at all times. There was no financial reward associated with writing the paper. Racha Aaraj, Pharm D, MSc, MPH and Mohammad Yassine, BPharm, MSc from Phoenix Clinical Research (Lebanon) provided editorial assistance for the preparation of this manuscript; this assistance was funded by Sobi. The funder was not involved in the design of the study; collection, analysis, or interpretation of data; or in writing the manuscript. The views and opinions expressed are those of the authors.

Author information

Affiliations

Authors

Contributions

FA, GE, TA, TBA, FA, and HA were involved in the writing of the clinical case, discussion and conclusion. They were also involved in the medical management of the infant. All the authors reviewed and approved the final article.

Corresponding author

Correspondence to Fahad Alabbas.

Ethics declarations

Ethics approval and consent to participate

Institutional review board/ethics committee approval was obtained from the Institutional Review Board at Prince Sultan Military Medical City CR (01/FA-08/11/2020) and written informed consent was obtained from the patient’s parent. A copy of the institutional review board approval is available for review by the Editor of this journal.

Consent for publication

Written informed consent was obtained from the patient’s parent for genetic testing and publication of this case report. A copy of the consent is available for review by the Editor of this journal.

Competing interests

The authors declare that they have no competing interests.

Additional information

Publisher’s Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

Reprints and Permissions

About this article

Verify currency and authenticity via CrossMark

Cite this article

Alabbas, F., Elyamany, G., Alanzi, T. et al. Wolman’s disease presenting with secondary hemophagocytic lymphohistiocytosis: a case report from Saudi Arabia and literature review. BMC Pediatr 21, 72 (2021). https://0-doi-org.brum.beds.ac.uk/10.1186/s12887-021-02541-2

Download citation

Keywords

  • Hemophagocytic lymphohistiocytosis
  • Lipid storage disorder
  • Lysosomal acid lipase
  • Wolman’s disease