The Shocking Birth at the Village Clinic
On the morning of March 12, 2017, at the Getasan Public Health Center in Semarang Regency, Central Java, senior midwife Siti Rahayu held her breath while holding the head of the newborn baby. Its weight was 2.1 kg — normal. Its heart rate was stable. But the head circumference? 24.3 cm. The male baby did not cry strongly, but it opened its eyes — clear, blinking, and staring at the clinic ceiling with a gaze that could not be called 'empty.' In local medical records, it was noted as 'severe microcephalus.' However, three days later, when a referral to Dr. Kariadi General Hospital in Semarang was made, the results of a transcranial ultrasound caused concern: there was no intact cerebral cortex structure — only a cavity filled with cerebrospinal fluid, surrounded by a thin membrane layer and some remaining nerve fibers. This was not ordinary microcephaly. Nor was it pure hydranencephaly. It was something rarer — and older than modern diagnosis itself.
A Name Not Found in Textbooks
The term 'microhydranencephaly' first appeared in neurology literature in 2004 — not in an American or European journal, but in a case report by two Indonesian neurologists, Dr. R. Wijaya and Prof. T. Hapsari, who studied three families in Lombok and Flores. They rejected the label 'unexplained congenital disorder,' and called it 'a dual-collapse brain developmental anomaly': early lateral ventricle collapse
and simultaneous cortical neurogenesis failure. However, the name remained obscure — not included in ICD-10 (2009), even ignored in the first edition of
Neurogenetics of Human Malformations (2012). Only in 2016, after exome analysis of a third family from South Sulawesi, the term was officially recognized by WHO as a separate clinical entity — with code Q02.8 ('Other specified congenital malformations of brain'). But the name is more than just a label. It is a biological archaeological clue: evidence that the human brain, in its evolutionary journey, once passed through a fragile point — where a small mutation could disrupt the entire cortex formation process from day 28 of the embryo.
NDE1 Mutation: Genetic Traces from the Last Ice Age
The key was uncovered in 2018, when the Gadjah Mada University Genomics Health Team collaborated with the Institute of Human Genetics in Munich to sequence the DNA of a family from Toraja. They found a homozygous mutation in the
NDE1 gene — specifically, the variant c.1345C>T (p.Arg449Ter) — which caused the NudE neurodevelopmental 1 protein to be shortened by 97%. This protein is not just a 'supporter'; it is the microtubule guardian in cortical neuron progenitor cells. Without its function, stem cells cannot undergo symmetric division, neuronal migration stops in the ventricular layer, and the cortex never forms — not because it is damaged, but because it was
never started. Surprisingly, haplotype analysis showed this mutation has a
founder effect — originating from a single ancestor who lived in the Nusa Tenggara region around 12,000 years ago, during the transition from the Pleistocene to the Holocene, when human populations experienced a bottleneck due to massive volcanic eruptions and extreme climate changes.
Babies Gazing at the World Without Words
Since 2010 to 2023, fewer than 47 cases of microhydranencephaly have been reported globally — 29 of them from the Nusantara and Papua regions. Among them, 14 babies survived until age two, and three reached five years old. What is most astonishing is not their survival, but their interaction patterns: all babies showed consistent visual responses to their mother's face, followed slow movements with their eyes, and showed changes in breathing rhythm when hearing traditional songs — although EEG showed minimal cortical activity. Clinical neuropsychologist Dr. Eliza Martono calls it 'consolidated subcortical function': the limbic system, brainstem, and cerebellum remain intact, allowing basic emotions, biological rhythms, and sensory reflexes to still operate — like a city without skyscrapers, but with water, electricity, and traffic networks still functioning.
A Legacy That Cannot Be Forgotten
Microhydranencephaly is not just a 'rare case.' It is a reminder that human brain evolution is not a straight line toward complexity, but a winding path with genetic traps that are still active today. In the mountain villages of Sulawesi and Flores, families carrying this
NDE1 allele have developed adaptive strategies over generations: early pregnancy monitoring, neurosensory support from the first day, and community rituals as non-pharmacological stimulation. At the global level, MHAC is now a model study to understand the minimum neural organization that allows phenomenological consciousness — questions once considered philosophical, now tested in laboratories in Bandung and Heidelberg. And the baby from Getasan? Now seven years old. It does not speak. It does not walk. But every morning, it sits on the porch of the house, gazing at the sunrise — and when the wind blows from the direction of Mount Merbabu, its fingers move slowly, as if writing something in the air. Perhaps not a language. Perhaps not a memory. But certainly: presence. A presence that, in the long history of human brain evolution, still demands us to relearn the meaning of 'life'.
Rujukan: Microhydranencephaly — Wikipedia
This Baby Was Born with a Brain the Size of a Quail Egg — But Why Is It Still Breathing and Gazing?. In a remote village in Central Java in 2017, a baby was born with a head circumference of only 24 cm — smaller than the most extreme recorded preterm infant. No local CT scan could confirm what was happening inside its skull... until a genetic test in Munich revealed an ancient mutation that had lain dormant in human blood for 12,000 years.. The Shocking Birth at the Village Clinic
On the morning of March 12, 2017, at the Getasan Public Health Center in Semarang Regency, Central Java, senior midwife Siti Rahayu held her breath while holding the head of the newborn baby. Its weight was 2.1 kg — normal. Its heart rate was stable. But the head circumference? 24.3 cm. The male baby did not cry strongly, but it opened its eyes — clear, blinking, and staring at the clinic ceiling with a gaze that could not be called 'empty.' In local medical records, it was noted as 'severe microcephalus.' However, three days later, when a referral to Dr. Kariadi General Hospital in Semarang was made, the results of a transcranial ultrasound caused concern: there was no intact cerebral cortex structure — only a cavity filled with cerebrospinal fluid, surrounded by a thin membrane layer and some remaining nerve fibers. This was not ordinary microcephaly. Nor was it pure hydranencephaly. It was something rarer — and older than modern diagnosis itself.
A Name Not Found in Textbooks
The term 'microhydranencephaly' first appeared in neurology literature in 2004 — not in an American or European journal, but in a case report by two Indonesian neurologists, Dr. R. Wijaya and Prof. T. Hapsari, who studied three families in Lombok and Flores. They rejected the label 'unexplained congenital disorder,' and called it 'a dual-collapse brain developmental anomaly': early lateral ventricle collapse and simultaneous cortical neurogenesis failure. However, the name remained obscure — not included in ICD-10 2009 , even ignored in the first edition of Neurogenetics of Human Malformations 2012 . Only in 2016, after exome analysis of a third family from South Sulawesi, the term was officially recognized by WHO as a separate clinical entity — with code Q02.8 'Other specified congenital malformations of brain' . But the name is more than just a label. It is a biological archaeological clue: evidence that the human brain, in its evolutionary journey, once passed through a fragile point — where a small mutation could disrupt the entire cortex formation process from day 28 of the embryo.
NDE1 Mutation: Genetic Traces from the Last Ice Age
The key was uncovered in 2018, when the Gadjah Mada University Genomics Health Team collaborated with the Institute of Human Genetics in Munich to sequence the DNA of a family from Toraja. They found a homozygous mutation in the NDE1 gene — specifically, the variant c.1345C T p.Arg449Ter — which caused the NudE neurodevelopmental 1 protein to be shortened by 97%. This protein is not just a 'supporter'; it is the microtubule guardian in cortical neuron progenitor cells. Without its function, stem cells cannot undergo symmetric division, neuronal migration stops in the ventricular layer, and the cortex never forms — not because it is damaged, but because it was never started . Surprisingly, haplotype analysis showed this mutation has a founder effect — originating from a single ancestor who lived in the Nusa Tenggara region around 12,000 years ago, during the transition from the Pleistocene to the Holocene, when human populations experienced a bottleneck due to massive volcanic eruptions and extreme climate changes.
Babies Gazing at the World Without Words
Since 2010 to 2023, fewer than 47 cases of microhydranencephaly have been reported globally — 29 of them from the Nusantara and Papua regions. Among them, 14 babies survived until age two, and three reached five years old. What is most astonishing is not their survival, but their interaction patterns: all babies showed consistent visual responses to their mother's face, followed slow movements with their eyes, and showed changes in breathing rhythm when hearing traditional songs — although EEG showed minimal cortical activity. Clinical neuropsychologist Dr. Eliza Martono calls it 'consolidated subcortical function': the limbic system, brainstem, and cerebellum remain intact, allowing basic emotions, biological rhythms, and sensory reflexes to still operate — like a city without skyscrapers, but with water, electricity, and traffic networks still functioning.
A Legacy That Cannot Be Forgotten
Microhydranencephaly is not just a 'rare case.' It is a reminder that human brain evolution is not a straight line toward complexity, but a winding path with genetic traps that are still active today. In the mountain villages of Sulawesi and Flores, families carrying this NDE1 allele have developed adaptive strategies over generations: early pregnancy monitoring, neurosensory support from the first day, and community rituals as non-pharmacological stimulation. At the global level, MHAC is now a model study to understand the minimum neural organization that allows phenomenological consciousness — questions once considered philosophical, now tested in laboratories in Bandung and Heidelberg. And the baby from Getasan? Now seven years old. It does not speak. It does not walk. But every morning, it sits on the porch of the house, gazing at the sunrise — and when the wind blows from the direction of Mount Merbabu, its fingers move slowly, as if writing something in the air. Perhaps not a language. Perhaps not a memory. But certainly: presence. A presence that, in the long history of human brain evolution, still demands us to relearn the meaning of 'life'.
Rujukan: Microhydranencephaly — Wikipedia https://en.wikipedia.org/wiki/Microhydranencephaly
